New Mexico Geological Society, 2006 Annual Spring Meeting, Proceedings Volume最新文献_第3页

LA RISTRA (Colorado Plateau/Rio Grande rift seismic transect experiment): A geophysical snapshot of accumulated collisional processes on the craton margin LA RISTRA(科罗拉多高原/里奥格兰德裂谷地震样带实验):克拉通边缘累积碰撞过程的地球物理快照

New Mexico Geological Society, 2006 Annual Spring Meeting, Proceedings Volume Pub Date : 2006-04-21 DOI: 10.56577/sm-2006.940

W. S. Baldridge, R. Aster, W. Gao, S. Grand, J. Ni, S. Semken, M. West, D. Wilson

引用次数: 0

Interdisciplinary determination of active magmatic processes of the Socorro Magma body, central New Mexico 新墨西哥中部Socorro岩浆体活动岩浆过程的跨学科测定

New Mexico Geological Society, 2006 Annual Spring Meeting, Proceedings Volume Pub Date : 2006-04-21 DOI: 10.56577/sm-2006.984

J. Morton, S. Bilek, R. Aster, C. Rowe, A. Newman

{"title":"Interdisciplinary determination of active magmatic processes of the Socorro Magma body, central New Mexico","authors":"J. Morton, S. Bilek, R. Aster, C. Rowe, A. Newman","doi":"10.56577/sm-2006.984","DOIUrl":"https://doi.org/10.56577/sm-2006.984","url":null,"abstract":"In this project we integrate complementary analyses of GPS and passive seismic data to explore the mechanisms of magma inflation and crustal deformation caused by the Socorro Magma Body (SMB), a mid-crustal magma body residing at 19 km depth, which is responsible for as much as 45% of earthquakes above magnitude 2.5 in New Mexico. Previous studies involving active-source seismic refraction have contributed to determining the geometry of the SMB. New work using campaign geodetic measurements and InSAR interferometry during 1992-1999 has suggested that average uplift is occurring at 2-3 mm/year. Two new continuously telemetered GPS stations have been installed near two seismic stations in the Sevilleta National Wildlife Refuge located at 34°12'N 106°45'W and 34°15'N 106°58'W. Co-location of these stations will help illuminate the temporal relationship between deformation and seismicity associated with the SMB at time scale that have not previously been examined. We are developing a new catalog of seismicity occurring between 33°30'N to 35°N and 106°15'W to 107°30'W. It is a combination of arrival time data from larger events from the years 1996-2004 and waveform data for all locatable events, with preliminary data quality thresholds requiring a minimum of four recognizable arrivals recorded between September, 2004 and the present. This combined catalog of at least 500 events will be relocated using waveform cross-correlation and travel-time differential methods to sharpen our image of the seismogenic sources associated with inflation-induced seismicity.","PeriodicalId":203318,"journal":{"name":"New Mexico Geological Society, 2006 Annual Spring Meeting, Proceedings Volume","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131087172","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}

引用次数: 0

Structural and stratigraphic observations of Waulsortian mud mounds in the Sacramento Mountains, south-central New Mexico 新墨西哥州中南部萨克拉门托山脉沃尔索尔特土丘的构造和地层观察

New Mexico Geological Society, 2006 Annual Spring Meeting, Proceedings Volume Pub Date : 2006-04-21 DOI: 10.56577/sm-2006.958

J. Romero, K. Giles

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Middle Turonian selachian faunas and paleoecology, central New Mexico 新墨西哥中部，中Turonian selachia动物群与古生态学

New Mexico Geological Society, 2006 Annual Spring Meeting, Proceedings Volume Pub Date : 2006-04-21 DOI: 10.56577/sm-2006.974

Sally C. Williams, S. Lucas

引用次数: 0

Magmatism, metamorphism, and deformation of Proterozoic Mazatzal Province crust: A comprehensive study from the Burro Mountains, southwest New Mexico 马扎扎尔省元古代地壳的岩浆作用、变质作用和变形:来自新墨西哥州西南部Burro山脉的综合研究

New Mexico Geological Society, 2006 Annual Spring Meeting, Proceedings Volume Pub Date : 2006-04-21 DOI: 10.56577/sm-2006.962

J. Amato, A. O. Boullion, A. E. Sanders, G. Gehrels, M. Heizler, G. L. Farmer, L. C. Andronicos

引用次数: 1

Distribution of intermediate volcanic rocks on the Pajarito Plateau, Jemez Mountains, New Mexico 新墨西哥州耶梅斯山脉帕加里托高原中间火山岩的分布

New Mexico Geological Society, 2006 Annual Spring Meeting, Proceedings Volume Pub Date : 2006-04-21 DOI: 10.56577/sm-2006.981

K. Samuels, D. Broxton, D. Vaniman, G. Woldegabriel, J. Wolff, D. Hickmott, E. Kluk, M. Fittipaldo

{"title":"Distribution of intermediate volcanic rocks on the Pajarito Plateau, Jemez Mountains, New Mexico","authors":"K. Samuels, D. Broxton, D. Vaniman, G. Woldegabriel, J. Wolff, D. Hickmott, E. Kluk, M. Fittipaldo","doi":"10.56577/sm-2006.981","DOIUrl":"https://doi.org/10.56577/sm-2006.981","url":null,"abstract":"Boreholes drilled for groundwater characterization at Los Alamos National Laboratory encountered at least three petrographically and chemically distinct intermediate lavas in the west-central Pajarito Plateau. These lavas represent a narrow time interval (2.3-3.6 Ma) during which both the Jemez Mountains volcanic field and Cerros del Rio volcanic field were active. Boreholes in the northern part of the Laboratory encountered fine-grained dacitic lava with 2-5% phenocrysts (5-35% plagioclase, 61-86% pyroxene, absent or minor amphibole) and relatively low SiO2 (~63.5%). Boreholes in the southwest part of the Laboratory encountered coarsely porphyritic lavas with 22% phenocrysts (59% plagioclase, 13% pyroxene, 25% amphibole) and 64.9-66.3% SiO2. Glomerophyric, sieved plagioclase grains are abundant in these samples. Boreholes in the central part of the Laboratory encountered fine-grained lavas with 22% phenocryst abundance (59% plagioclase, 13% pyroxene, and 1% relict amphibole) and relatively high SiO2 (67.4%). Although the relationship between the northern intermediate lavas and the adjacent volcanic fields is unclear, dacites in the central part of the Laboratory overlie late Pliocene basalts that thin to the west, suggesting a link with the Cerros del Rio volcanic field. The southwestern lavas resemble adjacent Sierra de los Valles Tschicoma Formation lavas, particularly Pajarito Mountain and Cerro Grande, which have an average of 23% phenocryst content (70% plagioclase, 10% pyroxene, and17% amphibole), and range in SiO2 composition from 63.77-68.9%. Pajarito Plateau intermediate lavas, erupted near the active western margin of the Española basin, represent an important link between coeval volcanism in the Cerros del Rio and Jemez volcanic fields.","PeriodicalId":203318,"journal":{"name":"New Mexico Geological Society, 2006 Annual Spring Meeting, Proceedings Volume","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124864555","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}

引用次数: 0

The CRONUS-Earth Project-How cosmic rays impact the study of Earth's history 克洛诺斯-地球计划——宇宙射线如何影响地球历史的研究

New Mexico Geological Society, 2006 Annual Spring Meeting, Proceedings Volume Pub Date : 2006-04-21 DOI: 10.56577/sm-2006.943

F. Phillips, S. McGee, B. Borchers

引用次数: 0

U-Pb SHRIMP dating to determine the age of zircons from crustal exnoliths of the Elephant Butte volcanic field-implications for the timing of rifting in southern New Mexico 用U-Pb SHRIMP定年法测定大象丘火山场地壳剥落岩中锆石的年龄——对新墨西哥南部裂谷时代的意义

New Mexico Geological Society, 2006 Annual Spring Meeting, Proceedings Volume Pub Date : 2006-04-21 DOI: 10.56577/sm-2006.977

C. Athens, J. Amato

{"title":"U-Pb SHRIMP dating to determine the age of zircons from crustal exnoliths of the Elephant Butte volcanic field-implications for the timing of rifting in southern New Mexico","authors":"C. Athens, J. Amato","doi":"10.56577/sm-2006.977","DOIUrl":"https://doi.org/10.56577/sm-2006.977","url":null,"abstract":"Three large xenolith samples were collected from the Elephant Butte volcanic field in the Spring of 2005. Samples were chosen for U-Pb SHRIMP dating at Stanford University. The xenoliths consist of quartz, plagioclase, and K-feldspar with minor clinopyroxene, magnetite, and zircon. This mineral assemblage suggests the protoliths were granitic rocks. No hydrous minerals were observed, suggesting that these rocks reached granulite facies. The zircons from the samples were subhedral to rounded indicating recrystallization has likely occurred. Some of the grains that were dated have normal zonation as where others have a spirally pattern of zonation also indicating recrystallization. 34 dates were obtained from sample 05-AR-01. Core analyses had an average age of 1465 ± 36 Ma. The weighted average of seven rim ages is 9.1 ± 1.5 Ma. 22 dates were obtained from sample 05-AR-02. The cores had an average age of 1445 ± 40 Ma. This sample also had rim ages of 21 Ma, 27 Ma, 9 Ma, and 6 Ma. This means that the rocks are originally Proterozoic in age but that they were recrystallized in the Tertiary. The core ages are similar to the age of the Proterozoic granites throughout New Mexico. The rims reflect Tertiary heating possibly related to Rio Grande rifting between 27-6 Ma.","PeriodicalId":203318,"journal":{"name":"New Mexico Geological Society, 2006 Annual Spring Meeting, Proceedings Volume","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127551656","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}

引用次数: 0

A new age of 1,600 Ma for deposition of the Upper Manzano Group-Evidence for a progressive (1.66-1.60 Ga) Mazatzal Orogeny, central New Mexico 新墨西哥中部马扎扎尔造山活动(1.66-1.60 Ga)的证据

New Mexico Geological Society, 2006 Annual Spring Meeting, Proceedings Volume Pub Date : 2006-04-21 DOI: 10.56577/sm-2006.963

A. Luther, J. Jones, L. Shastri, M. Williams, M. Jercinovic, K. Karlstrom

引用次数: 1

Paleopathology in New Mexican Tyrannosaurs from the Upper Campanian Kirtland Formation 上坎帕尼亚科特兰组新墨西哥暴龙的古病理学

New Mexico Geological Society, 2006 Annual Spring Meeting, Proceedings Volume Pub Date : 2006-04-21 DOI: 10.56577/sm-2006.948

T. D. Carr, T. Williamson

引用次数: 0