Upper Cretaceous and Tertiary Stratigraphy of Guatemala

Vinson, G. L.

doi:10.1306/bc743835-16be-11d7-8645000102c1865d

Cited by 27 publications

(11 citation statements)

References 4 publications

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“…Exposed over much of the Guatemalan portion of the PP is the Buena Vista Formation, loosely correlative with the Icaiché Formation to the north. Vinson described the type section from the Buenavista Escarpment (Fig 2) along the southern edge of the plateau as containing Lower Eocene carbonates and evaporites [6]. Subsequently, Lopez Ramos assigned an age of Paleocene to Early Eocene, 66.0-47.8 Ma, to the Icaiché Formation [74], later confirmed by others [7,75,76].…”

Section: Plos Onementioning

confidence: 76%

“…It is bounded on the south, east, and northwest by normal faults that enclose an area of 26,930 km 2 (S1 File). Along the south and southeastern sides of the plateau, the Buenavista Escarpment has a relief of up to 200 m [4,6,54] while faults on the northwest flank have a relief of only 30 m, providing a gentle overall west-northwest tilt [2,55]. The RHFZ, bordering the plateau to the east, first developed in Late Cretaceous to Early Paleocene The Yucatán Platform, bounded to the south along a line from the Chiapas Fold and Thrust Belt to the northern limits of the Maya Mountains, was a shallow marine depositional setting during the Paleocene-Eocene.…”

Section: Regional Settingmentioning

confidence: 99%

“…The La Libertad Arch separates the basin into the North Petén and South Petén sub-basins. More thorough descriptions of the structural history of northern Guatemala, the formation of the Petén Basin, and its stratigraphic fill have previously been published [6,67,[71][72][73]. Exposed over much of the Guatemalan portion of the PP is the Buena Vista Formation, loosely correlative with the Icaiché Formation to the north.…”

Section: Plos Onementioning

confidence: 99%

“…Wadell first described the section along the escarpment as gypsum interbedded with marls [2]. Vinson described the type section, considered by him to be the lower portion of the formation, as a massive gypsum interbedded with fine-grained limestone, dolomite, and marls [6]. At this location, he measured the stratigraphic thickness of the Buena Vista Fm to be 300 m but indicated that he was not able to include an upper portion of the formation.…”

Section: Lithological Analysismentioning

confidence: 99%

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Geomorphology of the Mirador-Calakmul Karst Basin: A GIS-based approach to hydrogeologic mapping

et al. 2021

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This paper classifies the karst landscapes of the Petén Plateau and defines the Mirador-Calakmul Karst Basin by illustrating the distribution of its karst hydrologic features. Archaeological and spatial research of the Mirador-Calakmul area of Guatemala and Mexico has shown it to be a karst basin with geopolitical implications. Current research characterizes the karst landscapes of the Petén Plateau, maps the distribution of karst hydrologic features, and delineates the basin in geomorphological terms. To further this aim, multiple forms of remote sensing data including orthophotographs, a satellite Digital Elevation Model, satellite multispectral images, and Light Detection and Ranging (LiDAR) data have been integrated to interpret the karst features in the study area. Outcrop study and thin section analysis of the upper Buena Vista Formation document that the dominant lithologies are a shallow water algal boundstone interbedded with terrestrial caliche. Karst landforms have been mapped over the Petén Plateau and we identify five karst landscapes, the largest of which is a fluviokarst landscape dominated by karst valleys. We further map karst hydrologic features including seasonal swamps, dolines, intermittent lakes, intermittent streams, solution-enhanced fractures, and springs all of which are characteristic of drainage basins. Boundaries of the karst basin are mapped from multiple lines of evidence including distribution of the karst valleys, a line of springs along the western boundary of the fluviokarst landscape, and a surface drainage analysis. We capture and classify hydrologic data points and develop a regional groundwater map that indicates subsurface flow from east to west within the basin. A drainage map illustrates the extensive system of karst valleys, boundaries, and inferred groundwater flow paths of the Mirador-Calakmul Karst Basin. It was within this geomorphological setting that the ancient Maya developed an extensive civilization during the Middle and Late Preclassic periods (1000 BCE-150 CE).

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Section: Plos Onementioning

confidence: 76%

Section: Regional Settingmentioning

confidence: 99%

Section: Plos Onementioning

confidence: 99%

Section: Lithological Analysismentioning

confidence: 99%

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Geomorphology of the Mirador-Calakmul Karst Basin: A GIS-based approach to hydrogeologic mapping

et al. 2021

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“…The Tenejapa-Lacadón geological unity was first mentioned by Islas-Tenorio et al (2005). This layer represents the union of two contemporary and laterally continuous formations: Tenejapa, first described from outcrops of San Cristóbal de las Casas City (Quezada-Muñetón 1987), and Lacandón, primary known from Petén, Guatemala (Vinson 1962;Fourcade et al 1999). Because it is not possible to determine the boundaries between the two Formations and the proper identity of each unit is poorly understood, here we interpret both formations as a single element, the Tenejapa-Lacandón geological unity (see Alvarado-Ortega et al 2015).…”

Section: The Tenejapa-lacandón Geological Unitymentioning

confidence: 99%

The paleoichthyofauna housed in the Colección Nacional de Paleontología of Universidad Nacional Autónoma de México

Cantalice¹,

Martínez-Melo²,

Romero-Mayén³

2019

ZSE

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Fishes are a paraphyletic group composed by craniates except for the four-limbed clade Tetrapoda. This group was the only vertebrate representative until the Devonian but now comprises almost half of the vertebrate species, dominating nearly all aquatic environments. The fossil record is the key to understand the ancient paleobiodiversity and the patterns that lead the modern fish fauna, and paleontological collections play a fundamental role in providing accommodation, maintenance, and access to the specimens and their respective metadata. Here we present a systematic checklist of fossil fishes housed in the type collection of the Colección Nacional de Paleontología which is located at the Instituto de Geología of Universidad Nacional Autónoma de México. Currently housed in the type collection are 14 chondrichthyan specimens, belonging to two superorders, five orders, seven families, 10 genera, and five nominal species, and 361 osteichthyan specimens, belonging to eight orders, nine families, nine genera, and 26 nominal species. These fossils come from 32 localities and 15 geological units, which range temporally from the Jurassic to the Pleistocene. The paleoichthyofauna housed in the type collection of the Colección Nacional de Paleontología is remarkable for its singularity and reveals new insights about the origin and diversification of many groups of fishes. The recovery and curation of this fossil material indicates that knowledge of Mexican fossil fish diversity and its role in understanding lower vertebrate evolution are just emerging and reaffirms the importance of the biological and paleontological collections to the future biodiversity research.

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