GPR profiles for characterizing subsidence deformation in lake sediments within a maar crater

Cerca, Mariano; Carreón‐Freyre, Dora; Jorge, Aranda-Gomez Jose; Rocha-Treviño, Luis

doi:10.1109/icgpr.2014.6970428

Cited by 2 publications

(3 citation statements)

References 10 publications

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“…Before the 1980s the volcanic maar Rincón de Parangueo was a big lake, with a much lower salinity concentration, until a fracture inside the crater occurred, and the lake started to gradually desiccate (Aranda-Gómez et al 2013). As the lake dried out, water became hypersaline and highly alkaline as reported by Cerca et al (2014). Unfortunately, there is no evidence of the presence of B. paranguensis sp.…”

Section: Discussionmentioning

confidence: 77%

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Brachionus paranguensis sp. nov. (Rotifera, Monogononta), a member of the L group of the Brachionus plicatilis complex

Guerrero-Jiménez¹,

Vannucchi²,

Silva-Briano³

et al. 2019

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The Brachionus plicatilis complex represents the most studied group of rotifers, although the systematics of the species complex has not been completely clarified. Many studies have been conducted trying to explore the diversity within the complex, leading to the recognition of three major morphotypes: large (L), small-medium (SM), and small (SS). Currently six species have been described and classified under these types and another nine taxa have been identified but not formally described. Within the L group, three species have been officially described [B. plicatilis s.s. (L1), B. manjavacas (L2), and B. asplanchnoidis (L3)], while a formal description of L4, unofficially known as B. ‘Nevada’, is still lacking. In the present study, a new species, Brachionus paranguensissp. nov., is formally described and presented as a representative of the L4 clade. The species has been named after a high altitude saline crater lake from Central Mexico, where the specimens were collected. An integrated approach using DNA taxonomy through COI and ITS1 markers, morphology, and ecology was used to confirm the identity of the new species.

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Section: Discussionmentioning

confidence: 77%

“…In the present work, Brachionus paranguensis sp. nov., collected in the hypersaline and highly alkaline volcanic maar Rincón de Parangueo, Guanajuato, Mexico (Cerca et al 2014; Rocha-Treviño 2015) is described. It represents the unofficially known and undescribed B. ‘Nevada’ of the L4 clade (Gómez et al 2002; Mills et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Brachionus paranguensis sp. nov. (Rotifera, Monogononta), a member of the L group of the Brachionus plicatilis complex

Guerrero-Jiménez¹,

Vannucchi²,

Silva-Briano³

et al. 2019

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“…The position of selected sites along the profiles allowed to properly incorporate the topographic changes (dots along profiles A-A´ and B-B´ in Figure 3). Both complete profiles were preliminary presented in Cerca et al (2014). For this work, we have processed and reinterpreted the GPR data for enhancing visualization of the mud intrusions geometries and the disruption of the stratigraphy at the central part of the maar-lake.…”

Section: Ground Penetrating Radar (Gpr) Surveymentioning

confidence: 99%

Mobile mud layer underneath the desiccated maar lake of Rincón de Parangueo and insights into its microbial fingerprints

Sánchez-Sánchez¹,

Cerca²,

Alcántara-Hernández³

et al. 2021

revmexcg

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We surveyed a subsurface layer of saturated mobile mud and its microbial fingerprints below the desiccated bottom of a maar lake at Rincón de Parangueo (RP), Mexico. A multi-scale approach was followed using geological fieldwork, coring of the sediments, ground penetrating radar survey, physico-chemical characterization including X-ray diffraction and scanning electron microscope, and high-throughput DNA sequencing methods. The mobile mud is an organic-rich silty clay, with high values of alkalinity, volumetric water content and conductivity. Mud mobility has been attributed to overpressure caused by disequilibrium compaction of sediments related to active subsidence and pore overpressure produced by an input of groundwater and gas content in the sediments and resulted in a diverse set of structures related to mud tectonics such as injection domes and fluid seeps through fractures. Extraction and sequencing of sedimentary environmental DNA in the mud layer were performed for Bacteria and Archaea. Despite the small number of samples obtained, the microbial fingerprint from the sedimentary environmental DNA at subsurface shares similarities with the microbial communities identified on the crater surface. Additionally, we identify the DNA of specific methanogenic microorganisms in the mud, such as Bathyarchaeia, Methanomassiliicoccales, and Methanobacteriales, and we speculate on their probable role in gas production and pore overpressure in the mud layer. The underground mud at Rincón de Parangueo represents a geologically dynamic environment with conditions that are favorable for the thriving of microbial communities.

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GPR profiles for characterizing subsidence deformation in lake sediments within a maar crater

Cited by 2 publications

References 10 publications

Brachionus paranguensis sp. nov. (Rotifera, Monogononta), a member of the L group of the Brachionus plicatilis complex

Brachionus paranguensis sp. nov. (Rotifera, Monogononta), a member of the L group of the Brachionus plicatilis complex

Mobile mud layer underneath the desiccated maar lake of Rincón de Parangueo and insights into its microbial fingerprints

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