Via the Arizona Geological Survey: The American Geosciences Institute (AGI) has just released Geoscience and Arizona regarding the impact of geoscience on the Arizona economy. You can download the fact sheet at: https://www.americangeosciences.org/sites/default/files/AZ_StateFactSheet_062817.pdf
The Arizona Geological Survey’s winter e-magazine features an article about the American Geosciences Institute’s Critical Issues program (www.americangeosciences.org/critical-issues).
The aim of this AGI program is to pioneer a new approach to sharing societally-relevant science with state and local decision makers. “Here in Arizona, we are sharing this with state and local decision-makers to help them wrap their heads around the complex issues involving groundwater, geologic hazards, and sustainable natural resource management.”
The program aims to support connections and communication between the geoscience community and decision makers. Although the program caters to decision makers at all levels, it particularly focuses on state and local decision makers because these stakeholders are commonly underserved by geoscience policy efforts.
The program convenes meetings, such as the AGI Critical Issues Forum, but its main interface is a web-based platform of resources that bring the expertise of the geoscience community to decision makers by offering a curated selection of information products from sources that include state geological surveys, federal and state agencies, and AGI’s member societies.
The Critical Issues program offers the following freely accessible information services:
Research database: Over 4,000 publications primarily from state geological surveys and the U.S. Geological Survey.
Webinars: Free webinars on a variety of topics that bring geoscientists and decision makers together to discuss potential solutions to challenges at the interface of geoscience and society.
Maps & Visualizations: 144 interactive maps and visualizations covering all 50 states and the District of Columbia.
Case studies: A new product that is coming online in Spring 2017. Specific applications of geoscience to societal problems.
Fact Sheets: A new product that is coming online in Spring 2017. Provide more in-depth information on the big issues.
Frequently Asked Questions: 105 questions on topics including: climate, energy, hazards, mineral resources, and water.
Read more at:
This AZGS e-Magazine also includes an article about groundwater use in the United States.
Unpublished one-of-a-kind Arizona mining documents – once filed away in cabinets and cardboard boxes – are now online, discoverable, and accessible at the Arizona Geological Survey Mining Data website (http://minedata.azgs.az.gov/).
More than 20,000 files, maps, and reports contributed by dozens of exploration geologists and mining firms are now available. The website exposes more than 8,500 geologic and engineering reports; 6,800 maps – geologic maps, mining claim maps, maps with assays, plats, underground maps and cross sections; and 5,500 historic photographs dating from the 1890s to 2000.
“The ability to deliver such a large volume of historical mining maps and documents to the public, free of charge, fills a critical need for bolstering mining efforts in Arizona. It provides an invaluable resource for planning future mineral exploration efforts.” according to Lee Allison, State Geologist and Director of the Arizona Geological Survey.
This new online resource is being premiered in time for the 2016 Society for Mining, Metallurgy & Exploration Annual Conference and Expo in Phoenix from Feb. 21 – 24. The collection includes major exploration holdings from the Arizona Department of Mines and Mineral Resources, Walter E. and Grover Heinrichs, James Sell, A.F. Budge Mining Ltd., Cambior Exploration, among many others.
Since the 1850s, Arizona has been a mecca for prospectors, exploration geologists and mining firms seeking copper, gold, silver, molybdenum, zinc, lead, manganese, tungsten, uranium, and coal, turquoise and semi-precious gems. Collectively, they left a mile-high paper trail of hundreds of thousands of pages, tens of thousands reports, well logs, letters, photographs, and geologic and mine maps.
The documents comprising this online repository were originally provided to the Arizona Mines and Mineral Resources Department by exploration geologists and mining firms.
The Mining Data site includes an applied search tool filtered by key words, mine names, collections, time and place. The geographic search tool provides for a radius search of 1 to 100s of miles from a point of interest for these georeferenced data.
The Arizona Geological Survey has just e-published field guides to Arizona geology. The 422-page series of illustrated guides is available for free download at http://repository.azgs.az.gov/uri_gin/azgs/dlio/1646
These guides were originally published as the proceedings of the 100th annual meeting of The Geological Society of America (GSA) was held in Phoenix, Arizona in October 1987. The newly available online guides are organized into separately downloadable sections.
One guide that may be of interest to laymen is “The Archaeological Geology of Paleo.-Indian Sites in Southeastern Arizona” which begins on page 212 of the Southern Arizona section. This paper discusses the late Quaternary geologic history preserved in the sediments in the San Pedro Valley and the Sulphur Springs Valley in southeastern Arizona . “These sediments are host to some of the oldest archaeological remains in North America.” Along the San Pedro River near Tombstone, “The Murray Springs Clovis site is unique in that it contains three distinct activity areas where a band of Clovis hunters killed a mammoth and several bison and occupied a small campsite during two or three brief visits 11,000 years ago. The buried occupation surface is clearly displayed in the arroyo walls as an erosional contact at the base of a distinctive black organic mat that preserved artifacts and extinct animal bones in their original position, and mammoth tracks, just as they were left 11,000 years ago.”
Here are the papers and guides:
Field-Trip Guide for Marble Canyon and Eastern Grand Canyon
Field Guide to the Lower Grand Canyon, from Peach Springs to Pierce Ferry
Geology of the Lower Grand Canyon and Upper Lake Mead by Boat–An Overview
Geology of the Grand Canyon – A Hike Through Time
Upper Holocene Alluvium of the Southern Colorado Plateau
Late Pleistocene Alluvium and Megafauna Dung Deposits of the Central Colorado Plateau
Late Cenozoic Volcanism in the San Francisco and Mormon Volcanic Fields
A Field Guide to the Jemez Mountains Volcanic Field, New Mexico
Stratigraphy, Correlation, and Tectonic Setting of Late Cretaceous Rocks in the Kaiparowits and Black Mesa Basins
Field Guide to Sedimentary Structures in the Navajo and Entrada Sandstones in Southern Utah and Northern Arizona
Late Paleozoic Depositional Systems, Sedona-Jerome Area, Central Arizona
Tectonic and Magmatic Contrasts Across a Two-Province Proterozoic Boundary in Central Arizona
Geomorphology and structure of the Colorado Plateau/Basin and Range Transition Zone
Land Subsidence and Earth-Fissure Formation in Eastern Phoenix Metropolitan Area, Arizona
Selected Hydrogeologic Problems in Central Arizona
The Archaeological Geology of Paleo-Indian Sites in Southeastern Arizona
Terraces of the Lower Salt River Valley in Relation to the Late Cenozoic History of the Phoenix Basin, Arizona
Late Cenozoic Deposits, Vertebrate Faunas, and Magnetostratigraphy of Southeastern Arizona
Caldera Structures Along the Apache Trail in the Superstition Mountains, Arizona
Field Guide to Lower- and Upper-Plate Rocks of the South Mountains Detachment Zone, Arizona
Structural Geology of the Rincon and Pinaleno Metamorphic Core Complexes, Southeast Arizona
Pinto Valley Copper Deposit
Tectonic Setting and Sedimentological Features of Upper Mesozoic Strata in Southeastern Arizona
Lower Cretaceous Coral-Algal-Rudist Patch Reefs in Southeastern Arizona
Paleoecology and Taphonomy of Recent to Pleistocene Intertidal Deposits, Gulf of California
Volcanic Structures and Alkaline Rocks in the Pinacate volcanic field of Sonora, Mexico
The Mesquite and Picacho Gold Mines: Epithermal Mineralization localized within Tertiary Extensional Deformation
Mesozoic Tectonics of Southeastern California
Field-Trip Guide to Parts of the Harquahala, Granite Wash, Whipple, and Buckskin Mountains,
West-Central Arizona and Southeastern California
Metamorphic Core Complexes, Mesozoic ductile Thrusts, and Cenozoic Detachments: Old Woman Mountains-Chemehuevi Mountains Transect, California and Arizona
Miocene Extension, Volcanism, and Sedimentation in the Eastern Basin and Range Province, Southern Nevada
Crustal Transect: Colorado Plateau-Detachment Terrane-Salton Trough
The Oak Creek-Mormon Lake Graben lies between Flagstaff and Sedona, Arizona. The Arizona Geological Society and geologist Paul A. Lindberg have produced a 13-page field guide to the geology of the area (shown on the map below).
This geologic field trip guide circumnavigates a loop of ~120 miles from Flagstaff to Sedona along Highway 89A and returns to Flagstaff along the Lake Mary Road. The guide contains many illustrations and photographs and may be downloaded from:
Lindberg introduces us to the local geological setting:
“The Oak Creek-Mormon Lake graben (a rift valley formed by extension of the earth’s crust) has been faulted into the southwestern margin of the Colorado Plateau as basin and range crustal extension has migrated eastward across Western U.S. over time. The graben may be as young as 2-3 million years old, based upon the youthful appearance of numerous V-shaped canyons (Oak Creek, West Fork, Munds, Woods and Rattlesnake Canyons) that cut the minimally eroded original surface of the largely basalt covered core of the graben. That morphology is in sharp contrast to more maturely eroded landforms along the northeast margin of 10 Ma Verde graben near Sedona. Timing of the genesis of the Oak Creek-Mormon Lake graben may be contemporaneous with the main eruptive cycle of San Francisco Peaks north of Flagstaff, Arizona.”
The 12 geologic stops focus on recent faulting and the encroachment of Basin and Range extensional structures on the Colorado Plateau. Each stop is detailed in the text, which is amply illustrated with photographs and colored geologic sketches.
The Arizona Geological Survey (AZGS) has a new website for mining data. This is a culmination of consolidation of the now defunct Arizona Department of Mines and Mineral Resources (ADMMR) with the AZGS.
Over the past several years, AZGS has performed a comprehensive inventory of the 30 archival collections, creating finding aids for the more than 10,000 folders, 6,000 maps, and 7,000 photographs.
Visit the new Mining Collections site here: http://minedata.azgs.az.gov/content/mining-collections
On July 2, 2014, the James Doyle Sell collection, which include more than 800 Arizona mine file records, was added to the Arizona Geological Survey Mine Site. The Sell mining collection comprises over 1,800 folders containing geologic reports and mineral exploration data from around the world, but primarily from Arizona and other states in the Southwest.
James (Jim) Sell was a native Arizonan, born in Casa Grande in 1930; he passed away on 18 Feb. 2011. For 32 years, Jim worked for ASARCO, where he served for some years as Southwest Exploration Manager. During his long career, Jim engaged in 100s of exploration and mining projects. A meticulous fellow, Jim kept records of most of these endeavors and donated his entire collection to the Arizona Dept. of Mines and Minerals Resources (ADMMR). See an article in Arizona Geology Magazine here.
Go to http://repository.azgs.az.gov/uri_gin/azgs/dlio/1439 to see an inventory of material in the collection.
The Arizona Geological Survey is experimenting with new ways of communicating geology and geologic stories to Arizonans and K-12 educators.
AZGS has produced its first-ever map story which follows geologist Steve Rauzi and a team of geoscientists as they raft through Grand Canyon.
“In a sequence of 29 captioned images, you’ll see Grand Canyon and some of its tributary canyons as a geologist sees them. Rauzi fingers individual rock units and puts a face – of sorts – to the names of famous rock formations: Devil’s Ramp and Vulcan’s Forge – products of the Pleistocene Uinkaret volcanic field, Kiabab Limestone, Coconino, Tapeats and Muav Sandstone, Bright Angel and Hermit Shale, the Redwall, Temple Butte, and Bass Limestone, and the Vishnu Schist.
Steve and his companions ramble across ancient stromatolite beds – some of Earth’s earliest life forms, bushwhack across faults and massive rockfall deposits, and close in on the Vishnu Schist (river-mile 78), Arizona’s oldest rock formation, at the bottom of Grand Canyon’s inner gorge. At river mile 98, you’ll see a dory run Crystal Rapid, and at river mile 179 scout Lava Falls Rapids from a beach safely upstream.”
You can begin the journey here: A Geologist in Grand Canyon – Map Story. The graphic below shows the main page and the third image. Mousing over the inset on the right allows you to expand the image. Clicking the “x” on the bottom right of the expanded image returns you to the main page.
Here is the third image expanded. The caption reads “Peering upriver of Vasey’s Paradise. Springs flow from the Mississippian Redwall Limestone. The overlying cliffs are formed of Permian Supai Group, Hermit Shale, Coconino Sandstone, Toroweap Formation, and Kaibab Limestone.” The boats provide a sense of scale.
AZGS is soliciting comments from the public on improving the model. Comments may be sent to Mike Conway (Michael.firstname.lastname@example.org | 520.209.4146)
I learned something from this tour. I didn’t know that the Grand Canyon contains stromatolite beds (image 5) which are fossils of the earliest known life form on Earth.
Check it out. You may learn some geology and, if nothing else, there is some great scenery.
The Arizona Geology Survey has just released its summer, 2013, issue of Arizona Geology which features seven articles. See the whole issue at http://azgeology.azgs.az.gov/
Most interesting to me is the article: Ground-Source Geothermal Heating and Cooling: Sustainable and Affordable Energy for Arizona and the U.S. The article begins:
“This past August 12th was the first day of the new school year for ~ 1,000 students at Lookout Mountain Elementary School in Phoenix, Arizona. The high temperature that day was a torrid 109 degrees Fahrenheit while inside the newly constructed 50,000 square foot wing of the school, temperatures were a balmy 76 degrees Fahrenheit, thanks to a new ground-source geothermal system that exchanges heat with the cooler earth hundreds of feet below the ground surface.”
The other articles:
“The Arizona Broadband Seismic Network documented over 50 earthquakes in Arizona from January to July 2013. The quakes were mostly located in northern Arizona and were at depths ranging from 1.4 to 26 km (0.9 to 16.25 miles depth)”
“On July 7that 1:38 MST, a magnitude 3.5 earthquake shook the towns of Fredonia, Jacobs Lake, and Havasu . The earthquake was followed by a series of aftershocks, with two registering Md ~ 2.0 and several in the 1.0 range.”
“In 2011, the financially troubled Arizona Department of Mines and Mineral Resources (ADMMR) and the Arizona Mining and Minerals Museum shuttered their doors. The Arizona Geological Survey (AZGS) received the Department’s maps, photos and manuscript collections. That year, AZGS began a comprehensive inventory of the 30 archival collections, creating finding aids1 for the more than 10,000 folders, 6,000 maps, and 7,000 photographs.”
“The STATEMAP program is a component of the National Geologic Mapping Act of 1992. STATEMAP is a matching fund program whereby State general funds are matched one-to-one by federal funds to support geologic mapping by the states. The Arizona Geological Survey (AZGS) has participated in the STATEMAP program since its inception, and has produced 1:24,000-scale geologic maps of a large fraction of the State with funding from this program.”
“Geologic map production begins in the field. Geologists spend several months traversing pre-defined areas of Arizona’s landscape to collect geologic information about that area. Geologists collect qualitative and quantitative information in the form of observations in a field notebook or on a topographic map. Geologists use a GPS (global positioning system receiver) to identify observation locations.”
Besides oil & gas, this article provides brief information on drilling for carbon dioxide, CO2 sequestration, geothermal energy, and potash exploration.
Check it out.