San Juan Basin IV最新文献

{"title":"Supplemental road log 1: From intersection of Piedra Lumbre road and NM-197 to Star Lake and Pueblo Alto Trading Posts","authors":"E. C. Beaumont, Gretchen K. Hoffman","doi":"10.56577/ffc-43.65","DOIUrl":"https://doi.org/10.56577/ffc-43.65","url":null,"abstract":"Every fall since 1950, the New Mexico Geological Society (NMGS) has held an annual Fall Field Conference that explores some region of New Mexico (or surrounding states). Always well attended, these conferences provide a guidebook to participants. Besides detailed road logs, the guidebooks contain many well written, edited, and peer-reviewed geoscience papers. These books have set the national standard for geologic guidebooks and are an essential geologic reference for anyone working in or around New Mexico.","PeriodicalId":325871,"journal":{"name":"San Juan Basin IV","volume":"5 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":"124894373","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":"Second-day road log: From Cuba to Counselor, Lybrook, Nageezi, Barrel Springs, Fossil Forest, Blanco Trading Post and return to Cuba","authors":"T. Williamson, S. Lucas, A. Hunt, L. Smith, B. Kues","doi":"10.56577/ffc-43.33","DOIUrl":"https://doi.org/10.56577/ffc-43.33","url":null,"abstract":"","PeriodicalId":325871,"journal":{"name":"San Juan Basin IV","volume":"2 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":"122027414","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":"Upper Cretaceous and Paleogene stratigraphy and sedimentation adjacent to the Nacimiento uplift, southeastern San Juan Basin","authors":"L. Smith","doi":"10.56577/ffc-43.251","DOIUrl":"https://doi.org/10.56577/ffc-43.251","url":null,"abstract":"Uppermost Cretaceous and Paleogene terrestrial strata in the San Juan Basin record the local disruption and partitioning of the Cretaceous foreland basin by Laramide-aged up lifts. The importance of unconformities within the stratigraphic section, wh ich includes the Fruitland Formation, Kirtland Shale and Ojo Alamo Sandstone, and the nature of the Cretaceous/Tertiary boundary has been controversial, especially in the southeastern San Juan Basin near the Nacimiento uplift . Surface and subsurface mapping has recent ly identified an unconformity-bound sand-rich flu vial unit, here referred to as \"unit B,\" between the Fruitland/ Kirtland and Ojo Alamo formations, which may explain some of the earlier mapping problems . \" Unit B\" on Mesa Portales contains distinct channel sandstones and interbedded siltstones and mudrocks that show mottling and oxidation profiles typ ical of a high energy fluvial system with well-drained floodplains. Paleocurrent measurements clearly show that deposition of much of \"unit B\" was related to north-to-south paleoslopes. Detrital lithologies indicate that sandstones of \"unit B\" and the Ojo Alamo Sandstone were derived from similar bedrock lithologies . North-to-south directed channels, parallel to the Nacimiento up lift, were responsible for depositing \"unit B, \" the Ojo Alamo Sandstone, the upper Nacimiento Formation and the Cuba Mesa Member of the San Jose Formation . Maintenance of the position of channels parall el and adjacent to the Nacimiento uplift represents continued syntectonic sedimentation in this region from the Late Cretaceous through the early Eocene . INTRODUCTION Uppermost Cretaceous and Paleogene terrestrial strata in the San Juan Basin were deposited during northeast deltaic progradation following withdrawal of the Cretaceous seaway and subsequent Laramide (Late Cretaceous-Eocene) uplift within the southern Rocky Mountains (Baltz, 1967; Fassett and Hinds, 1971; Smith et al. , 1985; Ayers et al. , 1990; Smith, 1991 ). The stratigraphic and temporal significance of erosional contacts near the Cretaceous/Tertiary boundary has been controversial, especially in the southeastern San Juan Basin near the Nacimiento uplift (Fig. I). Arguments for single or multiple unconformities at and near the KIT boundary (Baltz, 1967; Fassett and Hinds, 1971; Sikkink, 1987) have been countered by a hypothesis of nearly continuous sedimentation across the contact (Klute, 1986). Here, I present data that show the stratigraphic posit ions of regional unconformities in the Upper Cretaceous through Lower Eocene section and present a model that describes sedimentation adjacent to the episodically active Nacimicnto uplift. A complete treatment of stratigraphic problems involving the Fruitland, Kirtland and Ojo Alamo formations is beyond the scope of this report. STRATIGRAPHY The stratigraphic sequence of interest includes the Fruitland Formation, Kirtland Shale, Ojo Alamo Sandstone , Nacimiento Formation and San Jose Formation (F","PeriodicalId":325871,"journal":{"name":"San Juan Basin IV","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":"129005116","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":"Interrelationships between the upper coal member of the Menefee Formation, the La Ventana Tongue, and the Lewis Shale in the southeastern San Juan Basin","authors":"E. C. Beaumont, Gretchen K. Hoffman","doi":"10.56577/ffc-43.207","DOIUrl":"https://doi.org/10.56577/ffc-43.207","url":null,"abstract":"-The La Yentana Tongue of the Cliff House Sandstone has been the subject of several studies in the northwest and central San Juan Basin, in particular for oil and gas potential. The lack of drill-hole dala in the southeastern San Juan Basin had restricted detailed studies in this area to outcrops and a few oil and gas test logs. Logs from the New Mexico Bureau of Mines and Mineral Resources coal-quality drilling program ( 1985-1988), additional oil and gas drilling completed since the late 1970s, together with the older data provide sufficient subsurface data for detailed interpretations of stratigraphic relationships in the southeastern San Juan Basin. A 27-km cross section based on 24 geophysical logs was constructed north-northeastward from the outcrop area, 8 km east of Torreon Trading Post. The cross section transects the upper coal member of the Menefee, the La Ventana Tongue and the Lewis Shale. The maximum development of the La Ventana Tongue is clearly seen on the cross section, as is the relationship of the La Ventana to the coals within the upper coal member sequence. After a sudden landward shift of the shoreline that terminated the La Ventana buildup, a secondary stacking of barrier beach sandstones developed further inland. This unit is informally referred to in this report as the Chacra Mesa tongue. The intertonguing between the upper coal member of the Menefee and the La Ventana Tongue can be related to the principle of stratidynamics. This concept assumes continuing subsidence in a depositional environment and deals with transitional units. such as the upper coal member and the La Yentana, between the nonmarine and marine. The variables introduced are rate of subsidence and rate of shoreline shift. The La Ventana-upper coal member sequence developed during a time of minimal shoreline movement, with minor oscillations and variable sediment","PeriodicalId":325871,"journal":{"name":"San Juan Basin IV","volume":"4 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":"133210382","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":"Uranium deposits in the eastern San Juan Basin, Cibola, Sandoval and Rio Arriba Counties, New Mexico","authors":"V. McLemore, W. L. Chenoweth","doi":"10.56577/ffc-43.341","DOIUrl":"https://doi.org/10.56577/ffc-43.341","url":null,"abstract":"Although the first report of uranium in New Mexico was from volcanic rocks in the Jemez Mountains, very litt le urani um has been produced ( < 20 ,000 lbs of U,0 , ) from the eastern San Juan Basin. Uranium occurs in Morri son Formation sandstones. other sandstones, the Todilto Formation, other sedimentary rocks. epithermal ve ins, and disseminated deposits in igneous and metamorphic rocks. Uranium deposits in the Morrison and Todilto Formations were deposited duri ng the Jurassic, although Tertiary-Quaternary oxidation and remobilization of some deposits may have occurred . Deposits in the Precambrian rocks in the Tusas Mountains are magmatic and related to grani tic and pegmatit ic rocks. Other uranium deposits in the eastern San Juan Basin may have been derived from devitriticat ion and leaching from the Bandelicr Tuff. The potential for nearfutu re development of uranium deposits in th is area is nil because of lack of demand, low uranium prices and low grade . 34 1","PeriodicalId":325871,"journal":{"name":"San Juan Basin IV","volume":"6 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":"129724542","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":"Supplemental road log 2: From Cuba to Nacimiento Copper mine","authors":"S. Lucas, T. Williamson","doi":"10.56577/ffc-43.71","DOIUrl":"https://doi.org/10.56577/ffc-43.71","url":null,"abstract":"","PeriodicalId":325871,"journal":{"name":"San Juan Basin IV","volume":"185 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":"123147230","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":"Charles H. Sternberg and the collection of late Cretaceous vertebrate fossils from the San Juan Basin, New Mexico","authors":"A. Hunt, S. Lucas, N. Mateer","doi":"10.56577/ffc-43.241","DOIUrl":"https://doi.org/10.56577/ffc-43.241","url":null,"abstract":"","PeriodicalId":325871,"journal":{"name":"San Juan Basin IV","volume":"511 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":"116539152","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":"Fossil mammals and the early Eocene age of the San Jose Formation, San Juan Basin, New Mexico","authors":"S. Lucas, T. Williamson","doi":"10.56577/ffc-43.311","DOIUrl":"https://doi.org/10.56577/ffc-43.311","url":null,"abstract":"- Fossil 111ammals fro111 the San Jose For111ation in the San Juan Basin are the only 111cans by which an age can be assigned to the San Jose Formation. These mam111als indicate an early Eocene (middle Wasatchian, Lysitean) age for the entire San Jose Formation except its basal strata, which have not produced age-diagnostic fossils. Selected, age-diagnostic fossil 111am111als from the San Jose Formation are illustrated here.","PeriodicalId":325871,"journal":{"name":"San Juan Basin IV","volume":"82 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":"115601285","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":"Geometry of Nacimiento-Gallina fault system, northern New Mexico","authors":"L. Woodward, Michael C. Hultgren, David L. Crouse, Margaret A. Merrick","doi":"10.56577/ffc-43.103","DOIUrl":"https://doi.org/10.56577/ffc-43.103","url":null,"abstract":"The Nacimiento-Gallina fault system trends nonherly for about 110 km. separating the San Juan Basin and the Colorado Plateau from the Rocky Mountain foreland to the east. From south to north the Pajarito, Nacimiento, Gallina and Tierra Montafiosa faults comprise this system. The east-dipping Pajarito and Nacimiento fau lts bound the west side of the Nacimiento uplift and are characterized mainly by reverse separation. The Gallina and Tierra Montafiosa faults are nearly vertical and define the west boundary of the Gallina-Archuleta arch . Movement on the Gallina fault had both dip-slip and strike-slip components and displacement on the Montafiosa fault was essentially dip slip. This complicated eastern boundary of the Colorado Plateau has led to markedly different interpretations of its tectonic evolution. mainly because of previous lack of detailed geologic maps. Since the pioneering work of Vincent Kelley in the 1950s there has been general agreement that the Colorado Plateau underwent right shift with respect to the adjacent Rocky Mountain foreland in northern New Mexico prior to the Pajarito and Nacimiento faults rupturing the sedimentary cover. However, there has been considerable debate concerning the amount of right slip (as distinct from shift) along the NacimientoGallina fault system. Right shift in Precambrian basement rocks among the eastern margin of the Colorado Plateau in late Paleocene to mid-Eocene time created northwest-trending echelon fo lds in the overlying Phanerozoic strata. This was followed by development of a west-facing monocline that was cut by the Pajarito and Nacimiento reverse faults. As the San Juan Basin subsided it was differentially folded relative to the GallinaArchuleta arch. resulting in a component of strike slip along the Gallina fault. This differential folding resu lted in variable offset along the Gallina fault with nonmatching folds on opposite sides of the fault. The axes of the folds do not predate fault movement and therefore cannot be used to determine the amount of strike slip. Lack of piercing points along the Pajarito . Nacimiento and Gallina faults precludes precise calculations of the strike-slip component of movement. These discontinuous faults with relative ly short traces suggest that only minor amounts of right slip occurred along them. Thus, right shift of the Colorado Plateau dies out at the north end of the Gallina fault and displacement on the Tierra Montafiosa fault is principally dip slip. 103","PeriodicalId":325871,"journal":{"name":"San Juan Basin IV","volume":"23 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":"128528091","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":"Strandplain and deltaic depositional models for the Point Lookout Sandstone, San Juan Basin and Four Corners Platform, New Mexico and Colorado","authors":"R. Wright-Dunbar, R. Zech, G. Crandall, D. Katzman","doi":"10.56577/ffc-43.199","DOIUrl":"https://doi.org/10.56577/ffc-43.199","url":null,"abstract":"","PeriodicalId":325871,"journal":{"name":"San Juan Basin IV","volume":"8 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":"126857650","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}