The Mesozoic La Mula Island, Coahuila, Mexico

Jones, Norris W.; McKee, James W.; D, Benjamin Márquez; Tovar, Jorge; Long, Lingliang; Laudon, T. S.

doi:10.1130/0016-7606(1984)95<1226:tmlmic>2.0.co;2

Cited by 21 publications

(7 citation statements)

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“…For example, the strongly deformed Granjeno schist of eastern Mexico yields a variety of radiometric ages ranging from 257 to 452 Ma, and was interpreted by Sedlock et al (1993) to represent rocks formed and metamorphosed in the subduction complex, formed during the assembly of Pangea. Following the Ouachita orogeny, a Permian-Triassic continental arc formed on the western coast of emerging Mexico, as recorded in the granitic rocks exposed at La Mula (Jones and McKee, 1984). The metaigneous allogenic blocks in the El Papalote diapir belong to none of these suites of igneous and metamorphic rocks.…”

Section: Origin Of the Blocksmentioning

confidence: 97%

Jurassic continental rift magmatism in Northeast Mexico: Allogenic metaigneous blocks in the El Papalote evaporite diapir, La Popa Basin, Nuevo León, Mexico

Garrison¹,

McMillan²

1999

Special Paper 340: Mesozoic Sedimentary and Tectonic History of North-Central Mexico

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Large allogenic blocks of greenschist facies metavolcanic and metaplutonic rocks in the ElPapalote evaporite diapir, located in the Laramide La Popa foreland basin of northeastern Mexico, are interpreted as local basement entrained in the evaporite during diapirism. On the basis of rock textures and geochemistry, the metaigneous rocks can be divided into four groups: metaplutonic, high-Nb metavolcanic, intermediate-Nb metavolcanic, and low-Nb metavolcanic rocks. The metavolcanic rocks have been thoroughly recrystallized to chlorite-actinolite-epidote-albite, but remnant volcanic textures remain. The rocks exhibit no metamorphic fabrics. The 40 Ar/ 39 Ar plateau ages on biotite in metaplutonic blocks indicate that the blocks last cooled through 350°C in the latest Jurassic at 145-146 Ma. Relatively high Nb and Ta concentrations and low La/Ta ratios, typical of continental rift magmas, suggest that both plutonic and volcanic protoliths were produced during continental rifting and preclude their association with either upper Paleozoic arc volcanic rocks or Triassic arc plutons of the nearby Coahuila block. The absence of foliated textures suggests that the blocks are not part of the middle Paleozoic or Precambrian crystalline basement. These relations suggest that the metavolcanic blocks represent continental rift basalts erupted on extended basement in the Sabinas basin during the Jurassic. Metaplutonic blocks may have been rift plutons exposed on horsts and eventually covered by the Callovian Minas Viejas evaporite, which was deposited in the subsiding rift basin. Because diapir initiation is inhibited by thick overburden (Schulz et al., 1993), it is likely that diapirism began by loading and/or extension in the Sabinas basin in the Early Cretaceous, after the metamorphic event. Allogenic blocks were entrained at the salt-basement interface and transported by the salt to the surface during subsequent diapirism. Garrison, J. M., and McMillan, N. J., 1999, Jurassic continental rift magmatism in northeast Mexico: Allogenic metaigneous blocks in the El Papalote evaporite diapir, La Popa basin, Nuevo León, Mexico, in Bartolini, C., Wilson, J.

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Section: Origin Of the Blocksmentioning

confidence: 97%

Jurassic continental rift magmatism in Northeast Mexico: Allogenic metaigneous blocks in the El Papalote evaporite diapir, La Popa Basin, Nuevo León, Mexico

Garrison¹,

McMillan²

1999

Special Paper 340: Mesozoic Sedimentary and Tectonic History of North-Central Mexico

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“…The Sabinas basin contains a thick (6000 m) section of Jurassic and Cretaceous strata, and developed initially as a rift-related trough between two basement highs, the fault-bounded Coahuila block to the south and the Burro-Salado arch to the northeast (Gonzaléz-García, 1973Padilla Sánchez, 1978Alfonso-Zwanziger, 1978;Eguilez de Antuñano andAranda-García, 1983, 1984;Echanove, 1986). Within the Sabinas basin there are a few Permian-Triassic granite intrusive areas (e.g., the La Mula and Monclova uplifts; Jones et al, 1984;Wilson, 1990) that probably served as local basement highs (Fig. 5).…”

Section: Tectonic Provincesmentioning

confidence: 99%

Mesozoic sequence stratigraphy and paleogeographic evolution of northeast Mexico

Goldhammer¹

1999

Special Paper 340: Mesozoic Sedimentary and Tectonic History of North-Central Mexico

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The Monterrey-Saltillo area of northeast Mexico is the juncture of two distinctly different Mexican tectono-stratigraphic provinces, the eastern Gulf of Mexico province and the western Pacific Mexico province, where Gulf of Mexico-driven versus Pacificdriven tectono-stratigraphic processes can be compared and contrasted. Each of these provinces are large subregions that have distinctive and separate tectonic evolutions, and different resulting stratigraphic packaging. They are characterized by distinctive structural belts and structural styles and basement. The different stratigraphies record a subregional response to the interaction of provincial tectonics (i.e., convergent versus divergent margins), eustatic changes in sea level, and sediment type and supply. The Monterrey-Saltillo area contains elements related to both Gulf of Mexico passive-margin development (principally the stratigraphy) and Pacific-related convergent margin (arc) tectonism (chiefly the structure). Thus a complete understanding of the area is critical in linking together two somewhat disparate geologic provinces in Mexico.In the Gulf of Mexico province, the tectonic evolution is dominated by passivemargin development associated with the opening of the Gulf of Mexico, overprinted by nonigneous Laramide orogenic effects. The stratigraphic evolution is dominated principally by eustasy in as far as thick regional accommodation cycles can be correlated throughout the Gulf of Mexico. I propose that the Middle Jurassic to Lower Cretaceous stratigraphy of northeast Mexico and the Gulf of Mexico area in general can be subdivided into four major, second-order depositional supersequences (~15 m.y. duration), defined as large regionally correlative, retrogradational to aggradational-progradational accommodation packages. Each supersequence exhibits systematic vertical stacking patterns and associated lateral facies shifts within subordinate third-order sequences (1-3 m.y. duration) and component lateral-vertical facies and systems tracts. The four supersequences are supersequence 1-upper Bathonian to lower Kimmeridgian (158.5-144 Ma); supersequence 2-lower Kimmeridgian to Berriasian (144-128.5 Ma); supersequence 3-Valanginian to lower Aptian (128.5-112 Ma); supersequence 4-lower Aptian to upper Albian (112-98 Ma). (Note that these ages are not certain.) Second-order supersequence boundaries, condensed sections, transgressive surfaces, and second-order systems tracts have been identified in outcrops of the Sierra Madre Oriental, biostratigraphically dated, and correlated with the northern U.S. Gulf of Mexico stratigraphic section. The identification of these components is based on (1) gross shelf to basin relationships of onlapping and offlapping facies; (2) stacking Goldhammer, R. K., 1999, Mesozoic sequence stratigraphy and paleogeographic evolution of northeast Mexico, in Bartolini, C., Wilson, J. L., and Lawton, T. F., eds., Mesozoic Sedimentary and Tectonic History of North-Central Mexico: Boulder, Colorado, Geological Society of America Special Pa...

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“…From the Berriasian throughout the Upper Hauterivian, fluvial and clastic sediments from San Marcos and La Mula formations, respectively, covered the northeastern continental margin of the Coahuila Block. Similar deposits also filled the southern edge of the Burro Peyotes Island (Jones et al, 1984;Goldhammer and Johnson, 2001). The eastern front of the Coahuila Block, the Carbonera and La Casita formations integrated into a deltaic system known as Saltillo Delta, which extended from the Coahuila Block to Saltillo-Monterrey (Ocampo-Díaz, 2011).…”

Section: Geotectonic Backgroundmentioning

confidence: 74%

Revisiting the Cupidito unit (Cupido Formation) along peritidal carbonates from northeastern Mexico

Cruz¹,

Chacón²,

Chávez-Cabello³

et al. 2020

revmexcg

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Depositional episodes are readily identified along representative localities of the Lower Cretaceous Cupido platform in northeastern Mexico. The basal part of the Cupido Formation exhibits a progradational reef platform that, at the upper limit, is truncated by a sequence boundary defined by a breccia. This breccia marks the development of a peculiar sedimentary facies informally known as the Cupidito unit, a distinctive stratigraphical unit in northeastern Mexico that remained uninterpreted for decades. Through the analysis of facies, microfacies and stable isotope comparisons from representative localities (Potrero Chico, Potrero de García, La Huasteca, La Muralla and Puerto Mexico) and from other previously reported outcrops, this work describes six diagnostic features for Cupidito and an improved stratigraphic model is proposed. The depositional sequence suggests a broad flat-topped platform with a general low organic productivity and restricted conditions followed by recurrent inundations of lagoon waters. Before drowning, this carbonate platform remained under equilibrium conditions interrupted by short pulses of relative higher-temperatures (48.3 °C and 39.2 °C). Coral-rudist-stromatoporoid patch-reefs with inferred inter-tropical temperatures between 31.5 °C and 32.2 °C originated as a progradational response to the instauration of a new Sequence Boundary at the base of Cupidito.

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The Mesozoic La Mula Island, Coahuila, Mexico

Cited by 21 publications

References 0 publications

Jurassic continental rift magmatism in Northeast Mexico: Allogenic metaigneous blocks in the El Papalote evaporite diapir, La Popa Basin, Nuevo León, Mexico

Jurassic continental rift magmatism in Northeast Mexico: Allogenic metaigneous blocks in the El Papalote evaporite diapir, La Popa Basin, Nuevo León, Mexico

Mesozoic sequence stratigraphy and paleogeographic evolution of northeast Mexico

Revisiting the Cupidito unit (Cupido Formation) along peritidal carbonates from northeastern Mexico

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