{"title":"POTENTIAL FOR LARAMIDE PORPHYRY COPPER DEPOSITS IN SOUTHWESTERN NEW MEXICO AND TRANS-PECOS TEXAS","authors":"V. McLemore","doi":"10.1130/ABS/2019AM-334592","DOIUrl":"https://doi.org/10.1130/ABS/2019AM-334592","url":null,"abstract":"New Mexico lies at the eastern edge of one of the world’s great metal-bearing provinces, where there are eight known Laramide porphyry copper deposits in New Mexico: Santa Rita, Tyrone (Burro Mountains district), Little Rock (Burro Mountains district), Copper Flat (Hillsboro district), Hanover-Hermosa Mountain (Fierro-Hanover district), Lone Mountain, Gold Lake (White Signal district), and McGhee Peak (Peloncillo Mountains). Additional Laramide skarn and polymetalic vein deposits in New Mexico formed in Paleozoic limestones and dolomitic limestones adjacent to calc-alkaline plutonic rocks emplaced during the Laramide compressional event; most of these areas have potential for additional porphyry copper deposits. FIGURE 1. Laramide porphyry copper deposits in southwestern United States and northern Mexico.","PeriodicalId":382579,"journal":{"name":"Geology of the Gila Wilderness-Silver City area","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115682486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Geologic controls on ground-water flow in the Mimbres Basin, southwestern New Mexico","authors":"Anne J. Finch, E. Melis","doi":"10.56577/ffc-59.189","DOIUrl":"https://doi.org/10.56577/ffc-59.189","url":null,"abstract":"A BSTRACT — A three-dimensional calibrated regional ground-water flow model of the Mimbres Basin developed by McCoy and Finch (unpubl. report for Chino Mines Company, 2006) shows that ground-water flow is controlled by the geology and structure of the mountain bedrock and basin fill, and that the basin can be divided into four major hydrogeologic regions. These regions show distinct ground-water flow patterns based on recharge, discharge, and hydraulic properties controlled by geology and structure. Local and regional geologic controls on ground-water flow include permeability contrasts resulting from deposi- tion, volcanism, and deformation associated with Basin and Range faulting, paleo-drainage, and topography. Bedrock plays an important role in each hydrogeologic region. About 24% of the ground water in storage in the ground-water flow model is within bedrock, and up to 30% of total modeled recharge to the Mimbres Basin occurs as areal recharge to bedrock hydrogeologic units. Recharge to bedrock hydrogeologic units becomes ground water in storage and ground-water flow to the basin fill.","PeriodicalId":382579,"journal":{"name":"Geology of the Gila Wilderness-Silver City area","volume":"181 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122930105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Geology of the Burro Mountains: Third-day road log from Silver City to the southern Burro Mountains on Highway 90 West","authors":"G. Mack, J. Amato, V. McLemore","doi":"10.56577/ffc-59.49","DOIUrl":"https://doi.org/10.56577/ffc-59.49","url":null,"abstract":"","PeriodicalId":382579,"journal":{"name":"Geology of the Gila Wilderness-Silver City area","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126027355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mangas Basin and the Mogollon Mountains: First-day road log, from Silver City to the Catwalk near Glenwood, via the Mangas Basin","authors":"G. Mack, J. Ratte","doi":"10.56577/ffc-59.1","DOIUrl":"https://doi.org/10.56577/ffc-59.1","url":null,"abstract":"","PeriodicalId":382579,"journal":{"name":"Geology of the Gila Wilderness-Silver City area","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127648923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Early geological studies in southwestern and south-central New Mexico","authors":"","doi":"10.56577/ffc-59.77","DOIUrl":"https://doi.org/10.56577/ffc-59.77","url":null,"abstract":",","PeriodicalId":382579,"journal":{"name":"Geology of the Gila Wilderness-Silver City area","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121517528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Magmatism and metamorphism at 1.46 Ga in the Burro Mountains, southwestern New Mexico","authors":"J. Amato, A. O. Boullion, A. E. Sanders","doi":"10.56577/ffc-59.107","DOIUrl":"https://doi.org/10.56577/ffc-59.107","url":null,"abstract":"A BSTRACT — The Burro Mountain granite and biotite-hornblende granite in the Burro Mountains make up a large plutonic complex that cuts 1.65 Ga Mazatzal province metamorphic rocks. A foliation in the pluton consists of aligned biotite, is most prominent near the contact with the country rock, and is absent in the interior of the pluton. We interpret this fabric as being generated during magmatic emplacement. The Burro Mountain granite locally cuts the smaller volume biotite hornblende granite. U-Pb zircon dating of four samples of the Burro Mountain granite yielded ages ranging from 1463–1455 Ma. The weighted mean 207 Pb/ 206 Pb date from all of these samples is","PeriodicalId":382579,"journal":{"name":"Geology of the Gila Wilderness-Silver City area","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122104035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"When batholiths exploded: The Mogollon-Datil volcanic field, southwestern New Mexico","authors":"Wolfgang E. (Wolf) Elston","doi":"10.56577/ffc-59.117","DOIUrl":"https://doi.org/10.56577/ffc-59.117","url":null,"abstract":"stretched-out accordion. Rio Grande rift the north-trending lesser branch, system of big cracks and late volcanism the A BSTRACT — Beginning in 1950, studies of the Mogollon-Datil volcanic field contributed to documenting a mid-Tertiary ignimbrite flareup (~40-15 Ma on a continental scale, 36-24 Ma in New Mexico). During this event, parts of western Mexico and the southwestern USA were periodically flooded by incandescent magma foam erupted from heaving calderas up to tens of kilometers in diameter, atop exploding granitic batholiths. The discovery of similar events on other continents and geologic periods was strong evidence for the then-disputed magmatic origin of granite, a problem fundamental to understanding the origin and nature of continents. During a proposed extensional orogeny , volcanism of the North American ignimbrite province began in the continental back arc of an ocean-to-continent convergent western plate margin. Regional chemical variations reflect location, thickness, and state of stress of the extending cratonic lithosphere. The unique 1200-km maximum distance of the province from the plate boundary resulted in part from ductile extension, in response to underplating of the continent by hot young oceanic lithosphere. Extension accelerated after the collision of the North American and Pacific plates and the transition from plate convergence to a lengthening transform plate boundary. Rising under extensional stress, mantle diapirs induced crustal melting. Siliceous magmas evolved as melting rose from lower to upper crustal levels. Contemporaneous high-Fe intermediate-to-mafic magmas evolved in the opposite direction, toward less depleted “primitive” magmas from progressively deeper mantle levels. Subse-quent brittle extension of a cooling plate resulted in the present Basin-and-Range configuration and basaltic magmatism.","PeriodicalId":382579,"journal":{"name":"Geology of the Gila Wilderness-Silver City area","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125714532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Geology of the southern Gila Wilderness: Second-day road log from Silver City to Lake Roberts via San Lorenzo","authors":"G. Mack, B. Kues, K. Giles, V. McLemore","doi":"10.56577/ffc-59.27","DOIUrl":"https://doi.org/10.56577/ffc-59.27","url":null,"abstract":"","PeriodicalId":382579,"journal":{"name":"Geology of the Gila Wilderness-Silver City area","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132170138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Closure and reclamation of the Hanover-Empire zinc mine area, Grant County, New Mexico","authors":"R. W. Newcomer, D. Romig, W. Niccoli","doi":"10.56577/ffc-59.151","DOIUrl":"https://doi.org/10.56577/ffc-59.151","url":null,"abstract":"A BSTRACT — The closure and reclamation of the Hanover-Empire Zinc mine area was designed to take advantage of the large volumes of alkaline waste rock available at the site. Waste rock piles at the site were mapped and classified based largely on their sulfide and carbonate contents using standard geological field procedures and acid-base accounting analytical methods. Additionally, representative waste rock samples were collected and analyzed to evaluate their suitability as a cover material capable of supporting revegetation. Results of the investigation were used to develop a conceptual closure plan for the features at the site. The components of closure ultimately included the dewatering of two large pits, structure demolition and scrap disposal, stockpile removal to pits and quarries, regrading and covering of reactive materials with alkaline waste rock, construction of surface water controls along Buckhorn Gulch, highwall fencing, safeguarding shaft and adits and seeding and revegetation.","PeriodicalId":382579,"journal":{"name":"Geology of the Gila Wilderness-Silver City area","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124799492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The early Oligocene Copperas Creek volcano and geology along New Mexico Highway 15 between Sapillo Creek and the Gila Cliff Dwellings National Monument, Grant and Catron counties, New Mexico","authors":"J. Ratte","doi":"10.56577/ffc-59.129","DOIUrl":"https://doi.org/10.56577/ffc-59.129","url":null,"abstract":"A BSTRACT — New Mexico Highway 15 between Sapillo Creek and the Gila Cliff Dwellings National Monument provides a tour through the eroded remains of the ~ 30 million year old Copperas Creek volcano, as preserved between the west-northwest -trending Sapillo Creek and Gila Hot Springs grabens of Basin and Range age. Colorful exposures of altered volcanic rocks in road cuts and a scenic overlook of the Alum Mountain eruptive center are witness to the hydrothermal alteration and mineralization in a Yellowstone-type hot spring environment here in Oligocene time. New Mexico Highway 15 ends at the Gila Cliff Dwellings where alcoves in Gila Conglomerate were occupied by members of the Mogollon culture 700-800 years ago. south outcrops.","PeriodicalId":382579,"journal":{"name":"Geology of the Gila Wilderness-Silver City area","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129599366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}