SANDAG's Conserved Lands Layers

The SANDAG's Conserved Lands data is used to develop and maintain a comprehensive inventory of land in the region that is conserved for the purpose of protecting open space and natural habitats, including lands inside and outside of NCCP areas. Conserved lands are those lands that are legally conserved to: Protect natural habitats, species, and open space (including agricultural lands that are important components of the regional habitat preserve design); Contribute to the existing and planned regional habitat preserve system; and Managed to protect the open space or natural resources into the future.

Tags: conserved, emp, lands, mitigation, san diego, All tags... sandag, transnet, Fewer tags

Melt inclusion and mineral geochemical analyses supporting the evaluation of petrogenesis, degassing, and metallogenic potential of mid-Cenozoic rhyolite magmas in northern Nevada, USA

This data release presents geochemical analyses of silicate melt inclusions, host quartz phenocrysts, and biotite phenocrysts in samples collected by the U.S. Geological Survey (USGS) from mid-Cenozoic rhyolitic rocks from northern Nevada. Igneous intrusions and volcanic rocks in this study encompass nineteen rhyolitic samples from five magmatic centers across northeastern Nevada. Rhyolites were emplaced throughout northeastern Nevada over about an 8 million year timespan (41–33 mega-annum) in a variety of eruptive styles and volumes, ranging from meter-wide dikes to caldera-forming ignimbrites, and were roughly contemporaneous with regional ore deposition. Samples were prepared for petrographic and scanning electron...

Categories: Data; Tags: Bald Mountain, Beast pit, Blue Star Mine, Caetano Caldera, Carico Lake Valley, All tags... Carlin-type gold, Copper Canyon, Cortez Hills pit, EMP, Economic Geology, Electron microprobe, Elko County, Eureka, Eureka County, FTIR, Fish Creek Range, Fourier transform infrared spectroscopy, GGGSC, Genesis pit, Geology, Geophysics, and Geochemistry Science Center, LA-ICP-MS, Lander County, Laser-ablation inductively coupled plasma mass spectrometry, MRP, Magmas to Metals project, Maverick Springs Range, Mineral Resources, Mineral Resources Program, Mount Tenabo, Nanny Creek, Nevada, Pequop Mountains, Rocky Pass, SEM, SHRIMP-RG, Scanning electron microscope, Sensitive high-resolution ion microprobe-reverse geometry, Shoshone Range, Target Hill, Toiyabe Range, Tuscarora Mountains, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), United States, Volcanology, White Pine County, chemical analysis, economy, geoscientificInformation, igneous rocks, magma plumbing system, magmatic volatiles, melt inclusions, metallogenic potential, mineral resources, ore deposits, petrography, porphyry deposit, rare earth elements, rhyolite, rocks and deposits, thermobarometry, Fewer tags

Geochemical data supporting a comparison of apatite between regional magmatism and the Pea Ridge Iron Oxide-Apatite-Rare Earth Element (IOA-REE) and Boss Iron Oxide-Copper-Cobalt-Gold-REE Deposits (IOCG) deposits, southeastern Missouri, USA

This data release presents high-spatial resolution geochemical analyses collected from Mesoproterozoic apatite crystals in igneous rocks from the St. Francois Mountains terrane and coeval ore rocks from the Pea Ridge iron oxide-apatite-rare earth element (IOA-REE) and Boss iron oxide-copper-gold (IOCG) deposits. These deposits are located in the southeast Missouri iron metallogenic province. These data support a journal article entitled, “Apatite trace element geochemistry and cathodoluminescent textures—A comparison between regional magmatism and the Pea Ridge IOA-REE and Boss IOCG deposits, southeastern Missouri iron metallogenic province, USA” by Celestine N. Mercer, Kathryn E. Watts, and Juliane Gross, that...

Categories: Data; Tags: BSE, Boss, EMP, GGGSC, Geochemistry, All tags... Geology, Geophysics, and Geochemistry Science Center, IOA-REE, IOCG, LA-ICP-MS, MRP, Mineral Resources Program, Mineralogy, Missouri, Pea Ridge, Pea Ridge, Saint Francois Mountains, USGS Science Data Catalog (SDC), United States, apatite, backscattered electron microscopy, chemical analysis, economy, electron microprobe, geoscientificInformation, igneous rocks, iron oxide-apatite-rare earth element deposit, iron oxide-copper-cobalt-gold-REE deposit, laser ablation inductively coupled plasma mass spectrometry, mineral resources, petrography, rare earth elements, rocks and deposits, Fewer tags