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Produced by David Howell & Co., these earrings are a simplified depiction of lava flows shown on our Geologic Map of Mount Taylor, which look a bit like flowers.

Look great and support the New Mexico Bureau of Geology's Mineral Museum with this fun, stylish hat! Order yours today! *FREE SHIPPING*-LIMITED TIME ONLY! Cart will indicate shipping but you will not be charged!

Produced by David Howell & Co., these earrings depict parts of the Geologic Map of the Valles Caldera. The caldera formed during two volcanic super-eruptions that took place 1.6 and 1.2 million years ago. With these earrings, more recent verbal eruptions that you encounter can go in one ear and out the other.

This Resource Map locates and describes 246 mining areas in New Mexico (excluding coal fields). The included booklet begins with a brief description of the history of mining in New Mexico and is followed by discussions of previous work, mining claims, the definition of a mining district, mining methods, and classification of mineral deposits. Short descriptions of individual mining districts and prospect areas in New Mexico are in Appendix 1. Appendix 2 includes metal production from selected districts. Appendix 3 is a summary of previous mining districts maps. This report updates File and Northrop (1966), Howard (1967), and Mardirosian (1971), the last comprehensive summaries of all mining districts in New Mexico.

Mirror Lake, one of seven sinkhole lakes, or cenotes, in Bottomless Lakes State Park, is located at the downgradient end of the regional hydrologic system in the Roswell Artesian Basin. Recharge to the artesian aquifer occurs on the Pecos Slope west of Roswell by direct infiltration from precipitation and by runoff from intermittent losing streams flowing eastward across the San Andres limestone outcrop. Groundwater flows east and south, then upward through leaky overlying gypsum confining beds of the Seven Rivers Formation in the Pecos River Valley, where the potentiometric surface in the artesian aquifer is above ground level. Dissolution of gypsum beds caused by this upward artesian flow created and continues to enlarge the cenotes along the Seven Rivers Escarpment. Overflow from Lea Lake, the southernmost and largest of the Bottomless Lakes sinkholes, amounts to roughly 15,000 acre-ft/yr and has caused an expansion of wetlands to the west, which are now hydraulically connected to the Pecos River, resulting in a net gain in streamflow and an increase in salinity in the river downstream from the park.

The gentle eastward regional dip of the area is locally reversed along the escarpment, where strata of the Seven Rivers Formation dip abruptly southwest by as much as 40°. This local dip reversal, clearly visible in the walls of Mirror Lake, is probably not tectonic but the result of subsurface dissolution of gypsum by ascending artesian groundwater and consequent slumping of overlying beds.

There are two versions of this guidebook available, the complete guidebook (152 pages), and a version with just the road logs that is spiral bound (76 pages).

The Valles caldera, located in the heart of the Jemez Mountains in north-central New Mexico, is the world’s premier example of a resurgent caldera, a giant circular volcano with an uplifted central floor and a near-perfect ring of roughly 15 postcaldera lava dome and flow eruptions.

This new Valles caldera map and cross sections represent the cumulative research efforts of countless geologists over the past 40 years, and several state and federal agencies. GM–79 compiles detailed geologic mapping completed in the past eight years from parts of the nine 7.5–min USGS topographic quadrangles that encompass the caldera. More than 150 map units are described in detail. Also incorporated are new geochronologic data and recent refinements to nomenclature.

Available folded or rolled (additional charge of $5.00 for rolled).
$18.95 plus $6.50 for shipping and handling and 5% gross receipts tax for NM residents.

There is also a bandana and puzzle version of this geologic map available.

This set of 8 postcards highlight flourites found throughout New Mexico. Each variety was photographed by Jeff Scovil. Send these back to your mineral collecting friends when you are on your next rock hounding adventure.

This boxed set of six volumes provides the most comprehensive and extensive review of New Mexico’s energy and mineral resources to-date. Each volume focuses on the geologic nature of the resource, the history of the resource development in New Mexico, and their importance to the world and New Mexico’s economy. Written by New Mexico’s own experts in the fields, this set covers energy resources of petroleum, natural gas, coal, uranium, and geothermal, along with the resources of metals and industrial minerals and rocks.

This memoir is published jointly by the New Mexico Bureau of Geology & Mineral Resources and the New Mexico Geological Society.

Energy and Mineral Resources of New Mexico, NMBGMR, Memoir 50 and NMGS Special Publication 13 (six-volume boxed set)

A: Petroleum Geology — Ronald F. Broadhead

B: Coal Resources — Gretchen K. Hoffman

C: Uranium Resources — Virginia T. McLemore and William L. Chenoweth

D: Metallic Mineral Deposits — Virginia T. McLemore and Virgil W. Lueth

E: Industrial Minerals and Rocks — Virginia T. McLemore and George S. Austin

F: Overview of the Valles Caldera (Baca) Geothermal System — Fraser Goff and Cathy J. Goff

The 135-mile Rio Chama of northern New Mexico is a major tributary of the Rio Grande. From its alpine headwaters at the Continental Divide of the glaciated San Juan Mountains in southern Colorado, this hidden gem flows across the Colorado Plateau in a spectacular canyon cut into Mesozoic sedimentary rocks, in places up to 1,500 feet deep. Towering, vibrant, sandstone cliffs, heavily wooded side canyons, superb camping, and a diversity of historical sites offer an outstanding wild river backdrop for the boater, angler, hiker, or camper.

This book contains detailed river maps of the seven sections of the Rio Chama, plus its three resplendent reservoirs, from the Colorado headwaters to its confluence with the Rio Grande near Española. The Chama Canyon section, below El Vado Dam and through the Chama Canyon Wilderness, is one of the finest, multi-day, whitewater trips in the Southwest.

Clip one of these lanyards to your hand lens and sling it around your neck for your next adventure in the field. Various colors are available, so specify in the comments which color choices you prefer. We'll send you a random color otherwise.