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Tuesday, July 14, 2020 | History

2 edition of Middle Jurassic Todilto Formation of northern New Mexico and southwestern Colorado found in the catalog.

Middle Jurassic Todilto Formation of northern New Mexico and southwestern Colorado

Douglas W. Kirkland

Middle Jurassic Todilto Formation of northern New Mexico and southwestern Colorado

marine or nonmarine?

by Douglas W. Kirkland

  • 47 Want to read
  • 39 Currently reading

Published by New Mexico Bureau of Mines & Mineral Resources in Socorro .
Written in English

    Places:
  • Todilto Formation.,
  • New Mexico.,
  • Colorado.
    • Subjects:
    • Geology, Stratigraphic -- Jurassic.,
    • Geology -- New Mexico.,
    • Geology -- Colorado.,
    • Todilto Formation.

    • Edition Notes

      Includes bibliographical references (p. 34-37).

      StatementD.W. Kirkland, R.E. Denison, and R. Evans.
      SeriesBulletin / New Mexico Bureau of Mines & Mineral Resources ;, 147, Bulletin (New Mexico. Bureau of Mines and Mineral Resources) ;, 147.
      ContributionsDenison, Rodger E., Evans, Robert, 1939-
      Classifications
      LC ClassificationsTN24.N6 A232 no. 147
      The Physical Object
      Pagination39 p. :
      Number of Pages39
      ID Numbers
      Open LibraryOL632268M
      LC Control Number96620257
      OCLC/WorldCa34271090

      Title: Stratigraphy of the Todilto Formation in the Ghost Ranch Area, New Mexico: Publication Type: Book: Authors: Stapor, F: Year: Keywords: Geology Stratigraphic – Jurassic Todilto Formation, Geology – New Mexico – Ghost Ranch Region: Call Number. POLHEMUS J.T., — North American Mesozoic aquatic Heteroptera (Insecta, Naucoroidea, Nepoidea) from the Todilto Formation, New Mexico. New Mexico Museum of Natural History Bulletin, 29– POLLARD J.E., — The gastric contents of an ichthyosaur from the Lower Lias of Lyme Regis, Dorset. Palaeontology, –

      New Mexico Geological Society Guidebook, 68th Field Conference, Geology of the Ouray-Silverton Area, , p. TRIASSIC-JURASSIC STRATIGRAPHY IN SOUTHWESTERN COLORADO Spencer G. LucaS New Mexico Museum of Natural History, Mountain Rd. NW, Albuquerque, NM ; @ Adams, S.S., Curtis, M.S., and Hafen, P.L., , Alteration of detrital magnetite-ilmenite in continental sandstones of the Morrison Formation, New Mexico: IAEA Proc.

      During the Middle Jurassic, a desert covered northern New Mexico and was replaced by a short-lived, hypersaline lake that lasted ab years. After that, the northern part of the state became an arid coastal plain. In Late Jurassic times, huge rivers flowed to the east and formed muddy floodplains. the middle, Jurassic; "McElmo" formation of the literature, uncon- formable, with basal part red and now assigned to the Summerville, and with upper part now assigned to the Morrison. The Moenkopi formation does not extend into Colorado. The Shinarump conglomerate, Chinle formation, Wingate sandstone, and.


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Middle Jurassic Todilto Formation of northern New Mexico and southwestern Colorado by Douglas W. Kirkland Download PDF EPUB FB2

The Todilto Formation is a geologic formation in northern New Mexico and southeastern Colorado. It preserves fossils dating back to the Callovian stage of the middle Jurassic y: United States. Get this from a library. Middle Jurassic Todilto Formation of northern New Mexico and southwestern Colorado: marine or nonmarine?.

[Douglas W Kirkland; Rodger E. Todilto Formation of northern New Mexico and southwestern Colorado was deposited during the Middle Jurassic (middle Callovian) by a landlocked, saline lake (salina) developed in the Entrada erg. Evaporative pumping drew marine water from the Curtis sea in eastern Utah, which percolated through porous Entrada dune sands into the salina basin.

One of the most distinctive Jurassic lithostrati-graphic units in the American Southwest is the Todilto Formation of northern New Mexico and southwestern Colorado (Figure 1).

This relatively thin (>75 m) unit is mostly carbonates and evapor-ites in a thick section otherwise dominated by siliciclastic eolianites (Figures 2,3). INTRODUCTION The Middle Jurassic Todilto Formation is found in northern New Mexico and southwestern Colorado where it forms well- exposed outcrops of gypsum and limestone.

The Middle Jurassic Wanakah Formation in western Colorado is a poorly understood unit in terms of depositional environment and absolute age of deposition; however, a refined interpretation of the provenance has important implications for understanding the landscape evolution of southwestern Laurentia during Mesozoic rifting of the supercontinent Pangea and the opening of the Gulf of Mexico.

The Jurassic stratigraphy we use here (Fig. 2) is that published by Lucas and Anderson () and Lucas (). Some new data and analyses of Jurassic strata in New Mexico have appeared since. Todilto Formation As in previous reviews (Hunt and Lucas, ; Lucas et al., ; Lucas and Heckert, ), fossil fishes from the Middle Jurassic Todilto Formation (Fig.

3) remain New Mexico. Some of the Jurassic units pinch out or are truncated southward in west-central New Mexico, so that in the southernmost reaches of the Jurassic outcrop belt the entire Jurassic section is merged eolian sandstones.

The Geology of New Mexico, A Geologic History: New Mexico Geological Society Special Publicat p. Gonzalez, M.A.,Geomorphic and neotectonic analysis along a margin of the Colorado Plateau and Rio Grande rift in northern New Mexico: Albuquerque, University of New Mexico, unpublished Ph.D.

dissertation, p. The Todilto Formation can be seen in widely distributed, conspicuous outcrops in northern New Mexico and southwestern Colorado. It consists of a Limestone Mem- ber typically ft ( m) thick and a Gypsum Mem- ber typically ft ( m) thick (Fig.

The Summerville Formation is a geological formation in New Mexico, Colorado, and Utah of the Southwestern United States. It dates back to the Oxfordian stage of the Late Jurassic. Middle Jurassic Todilto Formation of northern New Mexico and southwestern Colorado by Douglas W.

Kirkland,New Mexico Bureau of Mines & Mineral Resources edition, in English. Paleontological evidence of a non-marine, saline, model of deposition of the Jurassic Todilto Formation, northern New Mexico and southwestern Colorado. New Mexico Journal of Science. Vol. Middle Jurassic Todilto Formation of northern New Mexico and southwestern Colorado: marine or nonmarine.

Responsibility D.W. Kirkland, R.E. Denison, and R. Evans. This dramatic change in the Middle Jurassic landscape is preserved along the Chimney Rock trail in the Todilto Formation, the darker lip capping the yellow Entrada layers. Here, the Todilto Formation is dark gray, made up of organic matter that has only partially decayed.

Variably foliated granites and granitic gneisses; - Ga in northern New Mexico; - Ga in central and southern New Mexico. Morrison Formation and upper San Rafael Group (lowermost Cretaceous. - upper Jurassic) at surface, covers % of this area.

In western New Mexico and eastern Arizona these two thick, cross-bedded formations are separated by beds of hard limestone and limy shale, at no place aggregating a thickness of more than a few feet, but so persistent that they were recognized as a distinct unit and named the Todilto formation, from Todilto Park, N.

Mex. Named as the middle formation of La Plata group for Todilto Park, T20N, R20W, McKinley Co, NM in the San Juan basin. No type locality designated.

Caps Wingate sandstone. Is older than Navajo sandstone. Ranges from 2 to ft thick. Two measured sections. Geologic map. Mapped into adjoining Apache and Navajo Cos, AZ in the Black Mesa basin. Douglas W. Kirkland.

Research Associate. Education. A., University of California at Berkeley, M. S., University of New Mexico, Albuquerque. [70] A new cratonic late Middle Jurassic paleopole, °E, °N (k =α 95 = ), has been determined for North America from the late Callovian Summerville Formation of north central New Mexico.

[71] The new cratonic Summerville paleopole of this study forms the seventh coeval cratonic North American and Colorado Plateau paleopoles.the Wanakah Formation (Todilto Formation in northern New Mexico; Anderson and Lucas, ) and Entrada Sandstone were penetrated by petroleum and geothermal exploration drill holes in Pagosa Springs and nearby areas (see cross sec-tions).

These formations are made of rock debris eroded from mountains in eastern Nevada and possibly from remnants of.and Mexican, from southwestern Texas and northern Mexico north- ward into southern New Mexico and central Arizona or beyond to southwestern Utah, southern Nevada, and southeastern California.

Gray oak, catclaw acacia, and desertwillow are illustrations. An interesting division includes the trees of the Mexican border region.