This feature class represents contacts between geologic units which may be either lithostratigraphic (stratiform) and lithodemic (do not conform to law of superposition). Allostratigraphic units (discontinuity bounded) are essentially supersets of lithostratigraphic packages and might be constructed by combining units from this feature class to create Allo_Contacts and Allo_poly. LithContacts are used to build polygons (Geo_Poly) and are topologically related to these polygons (was Geo_Poly arc in previous data model). Concealed, surficial, and overlay contacts are handled elsewhere. Fault contacts, handled elsewhere by Fault_line, are duplicated here since they bound geologic units, however, no details of the nature of the fault are attributed. This simplifies building polygon topology, but should be modified if building polygons from multiple feature classes is relatively easy. Particularly good and/or important exposures of contact relations could be recorded as point data in Features_point and assigned a special symbol along the contact.
| Field Name | Field Alias | Length | Field Type | Field Value | Default | Allow Nulls? | Pick List / Examples | Notes |
|---|---|---|---|---|---|---|---|---|
| CtClass | ContactClass | 24 | text | pick list | contact | n | contact, fault contact, intrusive contact, gradational contact, mass wasting | basic class of contact |
| CtType | ContactType | 24 | text | pick list | unspecified | y | contact: unspecified, conformity, paraconformity, disconformity, nonconformity, angular unconformity; fault: [null]; intrusive: [null], dike; mass wasting: landslide, slump, debris flow | Type of basic contact (fault contacts are null because they are described in detail elsewhere). |
| CtGeometry | ContactGeometry | 16 | text | pick list | [null] | y | unspecified, inclined, horizontal, vertical, curvilinear, intertonguing, buttress, wavy, irregular | geometry of contact |
| CtNature | ContactNature | 26 | text | pick list / var | [null] | y | unspecified, sharp, gradational-gradual, gradational-intercalated, soil, stylolites, drapes paleotopography, chilled margin, intermingled, indistinct, etc. | nature of contact |
| Confidence | " | 16 | text | pick list | [null] | y | unspecified, certain, probable, uncertain | how confident you are regarding the existence/identification and position of this feature |
| Exposure | " | 16 | text | pick list | [null] | y | unspecified, exposed, int-obscured, concealed | Is this feature exposed at the surface or is it intermittently exposed and/or obscured by colluvium? |
| Name | " | 50 | text | variable | [null] | y | great unconformity, K-T boundary, etc | |
| DsplyScale | DisplayScale | 8 | short Integer | pick list | 24000 | y | [null], 0, 24000, 50000, 12000, 6000, 100000, 250000,500000, 1000000 | Denominator of scale: display feature at scales larger than number specified (=< denominator). Zero indicates data that should never be displayed. [null] indicates display at all scales |
| SourceID | " | 50 | text | variable | [null] | y | feature level metadata (who mapped this) | |
| Comments | " | (max) | text | variable | [null] | y | Free text e.g. contact determined from detailed stereo photos |
This feature class records contacts concealed for some distance by alluvium or other cover. These lines bound subcrop polygons (Subcrop_poly) and might be combined later with other lines and with Subcrop_poly to make a derivative bedrock map.
| Field Name | Field Alias | Length | Field Type | Field Value | Default | Allow Nulls? | Pick List / Examples | Notes |
|---|---|---|---|---|---|---|---|---|
| CtClass | ContactClass | 24 | text | pick list | contact | n | contact, fault contact, intrusive contact, gradational contact, mass wasting | basic class of contact |
| CtType | ContactType | 24 | text | pick list | unspecified | y | contact: unspecified, conformity, paraconformity, disconformity, nonconformity, angular unconformity; fault: [null]; intrusive: [null], dike; mass wasting: landslide, slump, debris flow | Type of basic contact (fault contacts are null because they are described in detail elsewhere). |
| CtGeometry | ContactGeometry | 16 | text | pick list | [null] | y | unspecified, inclined, horizontal, vertical, curvilinear, intertonguing, buttress, wavy, irregular | geometry of contact |
| CtNature | ContactNature | 26 | text | pick list / var | [null] | y | unspecified, sharp, gradational-gradual, gradational-intercalated, soil, stylolites, drapes paleotopography, chilled margin, intermingled, indistinct, etc. | nature of contact |
| Confidence | " | 16 | text | pick list | [null] | y | unspecified, certain, probable, uncertain | how confident you are regarding the existence/identification and position of this feature |
| Name | " | 50 | text | variable | [null] | y | great unconformity, K-T boundary, etc | |
| DsplyScale | DisplayScale | 8 | short Integer | pick list | 24000 | y | [null], 0, 24000, 50000, 12000, 6000, 100000, 250000,500000, 1000000 | Denominator of scale: display feature at scales larger than number specified (=< denominator). Zero indicates data that should never be displayed. [null] indicates display at all scales |
| SourceID | " | 50 | text | variable | [null] | y | feature level metadata (who mapped this) | |
| Comments | " | (max) | text | variable | [null] | y | Free text |
This feature class represents contacts between allostratigraphic units (discontinuity bounded units). These allostratigraphic contacts are used to build polygons (Allo_poly) and are topologically related to these polygons. Concealed allostratigraphic contacts are handled elsewhere by using the AlloSubcrop feature class. Fault contacts, handled elsewhere by Fault_line, are duplicated here since they bound geologic units, however, no details of the nature of the fault are attributed. This simplifies building polygon topology, but may be modified if building polygons from multiple feature classes is easy. This feature class will probably be coincidient, in many cases, with lithologic contacts. Allostratigraphic units (discontinuity bounded) are essentially supersets of lithostratigraphic packages and might be constructed by combining units from LithoContacts class to create Allo_Contacts and Allo_poly. Particularly good and/or important exposures of contact relations could be recorded as point data in Features_point and assigned a special symbol along the contact.
| Field Name | Field Alias | Length | Field Type | Field Value | Default | Allow Nulls? | Pick List / Examples | Notes |
|---|---|---|---|---|---|---|---|---|
| CtClass | ContactClass | 24 | text | pick list | contact | n | contact, fault contact, intrusive contact, gradational contact, mass wasting | basic class of contact |
| CtType | ContactType | 24 | text | pick list | unspecified | y | contact: unspecified, conformity, paraconformity, disconformity, nonconformity, angular unconformity; fault: [null]; intrusive: [null], dike; mass wasting: landslide, slump, debris flow | Type of basic contact (fault contacts are null because they are described in detail elsewhere). |
| CtGeometry | ContactGeometry | 16 | text | pick list | [null] | y | unspecified, inclined, horizontal, vertical, curvilinear, intertonguing, buttress, wavy, irregular | geometry of contact |
| CtNature | ContactNature | 26 | text | pick list / var | [null] | y | unspecified, sharp, gradational-gradual, gradational-intercalated, soil, stylolites, drapes paleotopography, chilled margin, intermingled, indistinct, etc. | nature of contact |
| Confidence | " | 16 | text | pick list | [null] | y | unspecified, certain, probable, uncertain | how confident you are regarding the existence/identification and position of this feature |
| Exposure | " | 16 | text | pick list | [null] | y | unspecified, exposed, int-obscured | Is this feature exposed at the surface or is it intermittently exposed and/or obscured by colluvium? |
| Name | " | 50 | text | variable | [null] | y | great unconformity, K-T boundary, etc | |
| DsplyScale | DisplayScale | 8 | short Integer | pick list | 24000 | y | [null], 0, 24000, 50000, 12000, 6000, 100000, 250000,500000, 1000000 | Denominator of scale: display feature at scales larger than number specified (=< denominator). Zero indicates data that should never be displayed. [null] indicates display at all scales |
| SourceID | " | 50 | text | variable | [null] | y | feature level metadata (who mapped this) | |
| Comments | " | (max) | text | variable | [null] | y | Free text e.g. contact determined from detailed stereo photos |
This feature class represents buried contacts between allostratigraphic units (discontinuity bounded units). These concealed allostratigraphic contacts are used to build polygons (AlloSubcrop) and are topologically related to these polygons. Fault contacts, handled elsewhere by Fault_line, are duplicated here since they bound geologic units, however, no details of the nature of the fault are attributed. This simplifies building polygon topology, but may be modified if building polygons from multiple feature classes is easy. This feature class will probably be coincidient, in many cases, with ConcealedContacts.
| Field Name | Field Alias | Length | Field Type | Field Value | Default | Allow Nulls? | Pick List / Examples | Notes |
|---|---|---|---|---|---|---|---|---|
| CtClass | ContactClass | 24 | text | pick list | contact | n | contact, fault contact, intrusive contact, gradational contact, mass wasting | basic class of contact |
| CtType | ContactType | 24 | text | pick list | unspecified | y | contact: unspecified, conformity, paraconformity, disconformity, nonconformity, angular unconformity; fault: [null]; intrusive: [null], dike; mass wasting: landslide, slump, debris flow | Type of basic contact (fault contacts are null because they are described in detail elsewhere). |
| CtGeometry | ContactGeometry | 16 | text | pick list | [null] | y | unspecified, inclined, horizontal, vertical, curvilinear, intertonguing, buttress, wavy, irregular | geometry of contact |
| CtNature | ContactNature | 26 | text | pick list / var | [null] | y | unspecified, sharp, gradational-gradual, gradational-intercalated, soil, stylolites, drapes paleotopography, chilled margin, intermingled, indistinct, etc. | nature of contact |
| Confidence | " | 16 | text | pick list | [null] | y | unspecified, certain, probable, uncertain | how confident you are regarding the existence/identification and position of this feature |
| Exposure | " | 16 | text | pick list | [null] | y | unspecified, exposed, int-obscured | Is this feature exposed at the surface or is it intermittently exposed and/or obscured by colluvium? |
| Name | " | 50 | text | variable | [null] | y | great unconformity, K-T boundary, etc | |
| DsplyScale | DisplayScale | 8 | short Integer | pick list | 24000 | y | [null], 0, 24000, 50000, 12000, 6000, 100000, 250000,500000, 1000000 | Denominator of scale: display feature at scales larger than number specified (=< denominator). Zero indicates data that should never be displayed. [null] indicates display at all scales |
| SourceID | " | 50 | text | variable | [null] | y | feature level metadata (who mapped this) | |
| Comments | " | (max) | text | variable | [null] | y | Free text e.g. contact determined from detailed stereo photos |
This feature class represents contacts bounding geomorphic surfaces (not deposits). Geomorphic surface polygons (Surface_poly) are built from these contacts. Particularly good and/or important exposures of contact relations could be recorded as point data in Features_point and assigned a special symbol along the contact.
| Field Name | Field Alias | Length | Field Type | Field Value | Default | Allow Nulls? | Pick List / Examples | Notes |
|---|---|---|---|---|---|---|---|---|
| CtClass | ContactClass | 24 | text | pick list | contact | n | suface contact, fault contact | basic class of contact |
| SurfCtType | SurfContactType | 24 | text | pick list | unspecified | y | upper-bounding, lower-bounding, pediment surface | Type of contact bounding the geomorphic surface. A pediment surface has no associated deposit above or below. |
| CtGeometry | ContactGeometry | 16 | text | pick list | [null] | y | unspecified, inclined, sub-horizontal, horizontal, vertical, curvilinear, buttress, wavy, irregular | geometry of contact |
| CtNature | ContactNature | 26 | text | pick list / var | [null] | y | unspecified, sharp, gradational, soil, drapes paleotopography, indistinct, etc. | nature of contact |
| Confidence | " | 16 | text | pick list | [null] | y | unspecified, certain, probable, uncertain | how confident you are regarding the existence/identification of this feature |
| Exposure | " | 16 | text | pick list | [null] | y | unspecified, exposed, int-obscured | Is this feature exposed at the surface or is it intermittently exposed and/or obscured by colluvium? |
| Name | " | 50 | text | variable | [null] | y | Llano de ABQ | |
| DsplyScale | DisplayScale | 8 | short Integer | pick list | 24000 | y | [null], 0, 24000, 50000, 12000, 6000, 100000, 250000,500000, 1000000 | Denominator of scale: display feature at scales larger than number specified (=< denominator). Zero indicates data that should never be displayed. [null] indicates display at all scales |
| SourceID | " | 50 | text | variable | [null] | y | feature level metadata (who mapped this) | |
| Comments | " | (max) | text | variable | [null] | y | Free text e.g. contact determined from detailed stereo photos |
This feature class represents mapped faults, joints, and shear zones (measured fault orientations are in fault_point). Fault data such as measurements of fault planes and slickenlines are recorded as point data in fault_point which, for mapped faults, lie along these lines. Fault annotation can be handled by fault_point. Particularly good and/or important exposures of faults could be recorded as point data in Features_point and assigned a special symbol along the fault.
| Field Name | Field Alias | Length | Field Type | Field Value | Default | Allow Nulls? | Pick List / Examples | Notes |
|---|---|---|---|---|---|---|---|---|
| StrctClass | StructClass | 16 | text | pick list | unknown | n | unknown, normal, strike-slip, reverse, thrust, low-angle normal, complex, scarp, fault zone, joint, jointset, fracture, fracture zone, breccia, shear zone, mylonite, shear band | geometry (mostly) of structure; (only dominant fault type is important for line symbology) |
| Slipsense | " | 16 | text | pick list | [null] | y | [null], unknown, dextral, sinestral, dip-slip, oblique, [N,NE,E,SE,S,SW,W,NW-down] | dominant slip sense |
| SubSlipSns | SubSlipSense | 16 | text | pick list | [null] | y | [null], unspecified, unknown, dextral, sinestral, normal, reverse, [N,NE,E,SE,S,SW,W,NW-down] | subordinate slip sense |
| SlipBasis | " | 20 | text | pick list/var | [null] | y | unspecified, map pattern, minor faults, observed offset, slickenlines, geomorphic evidence, vegetation lineament, kinematic indicators, subsurface data, multiple criteria, etc. | basis for determination of dominant slip sense. Elaborate in comments if necessary. |
| SlipRate | " | 20 | float | variable | [null] | y | 10 | Slip rate on fault segment. Details in topologically related point data or in separate data table |
| SlipUnits | " | 20 | text | variable | [null] | y | mm/yr | units of slip rate |
| Confidence | " | 16 | text | pick list | [null] | y | unspecified, certain, probable, uncertain | how confident you are regarding the existence/identification of this feature |
| Exposure | " | 16 | text | pick list | [null] | y | unspecified, exposed, int-obscured | Is this feature exposed at the surface or is it intermittently exposed and/or obscured by colluvium? |
| Name | " | 50 | text | variable | [null] | y | Fault name or LinkID# (linked to point tables) | need to link point data to lines |
| DipSeparat | DipSeparation | 6 | float | variable | [null] | y | 34.3 | Stratigraphic separation down dip |
| StrikeSep | StrikeSeparation | 6 | float | variable | [null] | y | 24.7 | Stratigraphic separation along strike |
| SepUnits | SeparationUnits | 16 | text | pick list | [null] | y | [null] unspecified, km, meters, cm, mm, miles, feet, inches | |
| FltDipDir | DipDirection | 8 | text | pick list | [null] | y | unknown, vertical, N,NE,E,SE,S,SW,W,NW | |
| DipDirBsis | DipDirBasis | 25 | text | pick list / var | [null] | y | [null] unspecified, measured, map pattern, younging, stratigraphic constraint | |
| Ancestry | " | 36 | text | variable | [null] | y | Laramide reverse | Ancestry of reactivated fault |
| LastActive | " | 36 | text | variable | [null] | y | Pleistocene | most recent movement |
| DsplyScale | DisplayScale | 8 | short Integer | pick list | 24000 | y | [null], 0, 24000, 50000, 12000, 6000, 100000, 250000,500000, 1000000 | Denominator of scale: display feature at scales larger than number specified (=< denominator). Zero indicates data that should never be displayed. [null] indicates display at all scales |
| SourceID | " | 50 | text | variable | [null] | y | feature level metadata (who mapped this) | |
| Comments | " | (max) | text | variable | [null] | y |
This feature class represents mapped folds. Measured fold data is recorded as point data in fold_point which lie along these lines. We'll need to set up queries to split out the FoldClass attributes since we can only symbolize on permutations of 3 attributes.
| Field Name | Field Alias | Length | Field Type | Field Value | Default | Allow Nulls? | Pick List / Examples | Notes |
|---|---|---|---|---|---|---|---|---|
| Geometry | " | 16 | text | pick list | unspecified | n | unspecified, syncline, anticline, monocline, antiform, synform. synformal anticline, antiformal syncline | This mixes younging with geometry, but is simpler than having a field for shape and one for younging because having "synformal syncline" on a map legend seems like overkill. |
| Attitude | " | 16 | text | pick list | [null] | y | unspecified, unknown, upright, overturned, recumbent, inclined, reclined | fold position |
| FoldLnType | FoldLineType | 16 | text | pick list | [null] | y | unspecified, syncline/anticline: hinge line, axial trace; monoclines: inflection, synclinal bend, anticlinal bend | |
| FoldGen | FoldGeneration | 16 | text | pick list | [null] | y | [null] unspecified, unknown, F1, F2, F3, F4 | Would be basis for symbology for superposed folds |
| Confidence | " | 16 | text | pick list | [null] | y | unspecified, certain, probable, uncertain | how confident you are regarding the existence/identification of this feature. Queried folds could be separate annotation. |
| Exposure | " | 16 | text | pick list | [null] | y | unspecified, exposed, int-obscured | Is this feature exposed at the surface or is it intermittently exposed and/or obscured by colluvium? |
| TypeEvidnc | TypeEvidence | 20 | text | pick list | [null] | y | map pattern, minor faults, observed offset, inferred | |
| Asymmetry | " | 16 | text | pick list | [null] | y | unspecified, symmetric, assymetric | |
| FoldStyle | " | 16 | text | pick list | [null] | y | unspecified, 1A, 1B (parallel), 1C, 2 (similar), 3; chevron, fault-bend, kink, acute, gentle, open, close, tight, isoclinal, obtuse, disharmonic, cylindrical, non-cylindrical, conical | various fold classification schemes |
| PlungeDir | " | 25 | text | pick list | [null] | y | None, N,NE,E,SE,S,SW,W,NW | info on plunging folds (symbology controlled by node order?). Porpoising folds will be composed of oppositely plunging line segments |
| Facing | " | 16 | text | pick list | [null] | y | unspecified, unknown, upward, downward, [N,NE,E,SE,S,SW,W,NW] | Facing where known (direction towards stratigraphically younger rocks from fold hinge) |
| Name | " | 50 | text | variable | [null] | y | Fault name or LinkID# (linked to point tables) | need to link point data to lines |
| StructRlf | StructuralRelief | 8 | float | variable | [null] | y | amplitude of fold | |
| StrctRlfUn | StructReliefUnits | 16 | text | pick list | [null] | y | unspecified, km, meters, cm, mm, miles, feet, inches | |
| Vergence | " | 16 | text | pick list | [null] | y | N,NE,E,SE,S,SW,W,NW | |
| VrgncBasis | VergenceBasis | 25 | text | pick list | [null] | y | map pattern, younging, stratigraphic constraint | |
| DsplyScale | DisplayScale | 8 | short Integer | pick list | 24000 | y | [null], 0, 24000, 50000, 12000, 6000, 100000, 250000,500000, 1000000 | Denominator of scale: display feature at scales larger than number specified (=< denominator). Zero indicates data that should never be displayed. [null] indicates display at all scales |
| SourceID | " | 50 | text | variable | [null] | y | feature level metadata (who mapped this) | |
| Comments | " | (max) | text | variable | [null] | y |
This feature class represents linear geologic features like ashes, marker beds, or dikes that do not have sufficient area to be mapped as polygons.
| Field Name | Field Alias | Length | Field Type | Field Value | Default | Allow Nulls? | Pick List / Examples | Notes |
|---|---|---|---|---|---|---|---|---|
| GeoLnClass | GeoLineClass | 16 | text | pick list / var | unspecified | n | unspecified, ash, marker bed, dike, vein, etc. | |
| GeoLnType | GeoLineType | 16 | text | pick list / var | [null] | y | unspecified, fall, surge, reworked, ??? | |
| GeoLnSub | GeoLineSubtype | 16 | text | pick list / var | [null] | y | unspecified, ? | needed? |
| Confidence | " | 16 | text | pick list | [null] | y | unspecified, certain, probable, uncertain | |
| Exposure | " | 16 | text | pick list | [null] | y | unspecified, exposed, int-obscured | Is this feature exposed at the surface or is it intermittently exposed and/or obscured by colluvium? |
| Name | " | 50 | text | variable | [null] | y | White ash #4 (linked to point tables) | |
| Younging | " | 16 | text | pick list | [null] | y | unspecified, unknown, upright, overturned | |
| Thickness | " | 8 | float | variable | [null] | y | average thickness of feature | |
| ThickUnits | " | 8 | text | pick list | [null] | y | [null] meters, feet, mm, inches, etc. | |
| DsplyScale | DisplayScale | 8 | short Integer | pick list | 24000 | y | [null], 0, 24000, 50000, 12000, 6000, 100000, 250000,500000, 1000000 | Denominator of scale: display feature at scales larger than number specified (=< denominator). Zero indicates data that should never be displayed. [null] indicates display at all scales |
| SourceID | " | 50 | text | variable | [null] | y | feature level metadata (who mapped this) | |
| Comments | " | (max) | text | variable | [null] | y |
This feature class represents interpreted linear geologic features such as lineaments, aeromagnetic
| Field Name | Field Alias | Length | Field Type | Field Value | Default | Allow Nulls? | Pick List / Examples | Notes |
|---|---|---|---|---|---|---|---|---|
| IntLnClass | InterpLineClass | 16 | text | pick list / var | undefined | n | aml, lineament, isopleth, structure contour, isopach, etc. | |
| IntLnType | InterpLineType | 16 | text | pick list / var | [null] | y | volcanic centers, topographic, photographic, vegetation lineament, etc | |
| IntLnSub | InterpLineSubtype | 16 | text | variable | [null] | y | unspecified, ? | |
| Expression | " | 16 | text | unspecified | [null] | y | unspecified, NA, none, weak, moderate, strong | qualititative assessment of physical expression of linear feature |
| Certainty | " | 20 | text | unspecified | [null] | y | unspecified, well constrained, probable, poorly constrained, queried | how confident you are regarding the existence/identification of this feature |
| Name | " | 50 | text | variable | [null] | y | Jemez Lineament | |
| DataType | " | text | variable | [null] | y | elevation, thickness, etc. | ||
| DataUnits | " | 8 | text | pick list / var | [null] | y | meters, km, cm, mm, miles, feet, inches, mgal, etc. | |
| DataNum | " | 8 | float | variable | [null] | y | numerical data defined by DataType | |
| DataText | " | 25 | text | variable | [null] | y | non-numerical categorical data: e.g. cross bedded | non-numerical categorical data |
| DsplyScale | DisplayScale | 8 | short Integer | pick list | 24000 | y | [null], 0, 24000, 50000, 12000, 6000, 100000, 250000,500000, 1000000 | Denominator of scale: display feature at scales larger than number specified (=< denominator). Zero indicates data that should never be displayed. [null] indicates display at all scales |
| SourceID | " | 50 | text | variable | [null] | y | feature level metadata (who mapped this) | |
| Comments | " | (max) | text | variable | [null] | y |
lineaments, isopleths, structure contours etc.
This feature class represents contacts bounding overlay polygons. These overlays may represent variations in lithology, texture, provenance, or other field criteria of interest. These contacts are used to build polygons in Overlay_poly. These lines might not be displayed on standard bedrock geologic maps.
| Field Name | Field Alias | Length | Field Type | Field Value | Default | Allow Nulls? | Pick List / Examples | Notes |
|---|---|---|---|---|---|---|---|---|
| OvrlyClass | OverlayClass | 16 | text | pick list / var | unspecified | n | unspecified, textural, provenance, depo-system, etc | Basis for overlay |
| OvrlyBndy | OverlayBoundary | 16 | text | pick list | [null] | y | unspecified, sharp, gradational, indistinct, intertonguing, wavy, irregular, planar, mapped extent, fault, intrusive | overylay boundary |
| Confidence | " | 16 | text | pick list | [null] | y | unspecified, certain, probable, uncertain | how confident you are regarding the existence/identification of this feature |
| Exposure | " | 16 | text | pick list | [null] | y | unspecified, exposed, int-obscured | Is this feature exposed at the surface or is it intermittently exposed and/or obscured by colluvium? |
| Name | " | 50 | text | variable | [null] | y | ? | needed? |
| DsplyScale | DisplayScale | 8 | short Integer | pick list | 24000 | y | [null], 0, 24000, 50000, 12000, 6000, 100000, 250000,500000, 1000000 | Denominator of scale: display feature at scales larger than number specified (=< denominator). Zero indicates data that should never be displayed. [null] indicates display at all scales |
| SourceID | " | 50 | text | variable | [null] | unknown; unspecified; Smith, 2006b [variable] | feature level metadata (who mapped this); related to bibliographic detail | |
| Comments | " | (max) | text | variable | [null] | y | Free text e.g. contact determined from detailed stereo photos |
This feature class represents contacts bounding Mineralization-Alteration polygons (MinAlt_poly). These overlays represent alteration or mineralization, particularly related to ore deposits. These contacts are used to build polygons in MinAlt_poly. These lines might not be displayed on standard bedrock geologic maps.
| Field Name | Field Alias | Length | Field Type | Field Value | Default | Allow Nulls? | Pick List / Examples | Notes |
|---|---|---|---|---|---|---|---|---|
| MnAltClass | MinAltClass | 16 | text | pick list / var | unspecified | n | unspecified, argillic, propylitic, epithermal, K-metasomatism, porphyry copper, Lead-zinc-silver, etc. | Class of mineralization or alteration |
| MinAltBndy | " | 16 | text | pick list | [null] | y | unspecified, sharp, gradational, indistinct, intertonguing, wavy, irregular, planar, mapped extent, fault, non-conformity | Nature of alteration/minerlization boundary |
| Confidence | " | 16 | text | pick list | [null] | y | unspecified, certain, probable, uncertain | how confident you are regarding the existence/identification of this feature |
| Exposure | " | 16 | text | pick list | [null] | y | unspecified, exposed, int-obscured | Is this feature exposed at the surface or is it intermittently exposed and/or obscured by colluvium? |
| Name | " | 50 | text | variable | [null] | y | Sulfide minerals, etc | |
| DsplyScale | DisplayScale | 8 | short Integer | pick list | 24000 | y | [null], 0, 24000, 50000, 12000, 6000, 100000, 250000,500000, 1000000 | Denominator of scale: display feature at scales larger than number specified (=< denominator). Zero indicates data that should never be displayed. [null] indicates display at all scales |
| SourceID | " | 50 | text | variable | [null] | unknown; unspecified; Smith, 2006b [variable] | feature level metadata (who mapped this); related to bibliographic detail | |
| Comments | " | (max) | text | variable | [null] | y | Free text e.g. contact determined from detailed stereo photos |
This feature class represents metamorphic isograds. These lines bound areas of similar metamorphic grades and mineral assemblages that are portrayed by Metamorphic_poly.
| Field Name | Field Alias | Length | Field Type | Field Value | Default | Allow Nulls? | Pick List / Examples | Notes |
|---|---|---|---|---|---|---|---|---|
| IsgrdClass | IsogradClass | 16 | text | pick list | unspecified | n | unspecified, prograde, retrograde | |
| Confidence | " | 16 | text | pick list | [null] | y | unspecified, certain, probable, uncertain | |
| Exposure | " | 16 | text | pick list | [null] | y | unspecified, exposed, int-obscured | Is this feature exposed at the surface or is it intermittently exposed and/or obscured by colluvium? |
| Name | " | 50 | text | variable | [null] | y | Second-sillimanite isograd | |
| Reaction | " | (max) | text | variable | [null] | y | Muscovite + Sio2 -> Kspar + Sil | reactions that produce this assemblage |
| DsplyScale | DisplayScale | 8 | short Integer | pick list | 24000 | y | [null], 0, 24000, 50000, 12000, 6000, 100000, 250000,500000, 1000000 | Denominator of scale: display feature at scales larger than number specified (=< denominator). Zero indicates data that should never be displayed. [null] indicates display at all scales |
| SourceID | " | 50 | text | variable | [null] | unknown; unspecified; Smith, 2006b [variable] | feature level metadata (who mapped this); related to bibliographic detail | |
| Comments | " | (max) | text | variable | [null] | y |
This feature class records the locations of cross section lines, seismic/gravity profiles, or other transects.
| Field Name | Field Alias | Length | Field Type | Field Value | Default | Allow Nulls? | Pick List / Examples | Notes |
|---|---|---|---|---|---|---|---|---|
| SectClass | " | 16 | text | pick list | xsect | n | xsect, sample transect, measured section, geophysical transect | |
| SectType | " | 16 | text | pick list / var | [null] | y | [null] unspecified, geochemical profile, gravity profile, seismic line, magnetic profile, etc, Type Section, etc. | |
| Name | " | 50 | text | variable | [null] | y | A-A', M-83, Dalton Creek | Original quadrangle section name |
| HotLink | " | 128 | text | variable | [null] | y | hyperlink to a digital image of cross section, measured section etc. | |
| Xsect | " | blob |
blob | raster/vector? | [null] | y | cross section stored in database | might be created in arc or in a graphics program |
| DsplyScale | DisplayScale | 8 | short Integer | pick list | 24000 | y | [null], 0, 24000, 50000, 12000, 6000, 100000, 250000,500000, 1000000 | Denominator of scale: display feature at scales larger than number specified (=< denominator). Zero indicates data that should never be displayed. [null] indicates display at all scales |
| SourceID | " | 50 | text | variable | [null] | unknown; unspecified; Smith, 2006b [variable] | feature level metadata (who mapped this); related to bibliographic detail | |
| Comments | " | (max) | text | variable | [null] | y |
This feature class represents the boundary of the map extent and is topologically related to the MapExtent_poly polygon.
| Field Name | Field Alias | Length | Field Type | Field Value | Default | Allow Nulls? | Pick List / Examples | Notes |
|---|---|---|---|---|---|---|---|---|
| MapName | " | 50 | text | unspecified | n | Ladron Peak | these lines should be created from the quadrangle grid polygons and are topologically related. |