Results 1 to 10 of about 4,715 (199)

Palinologia y paleoambientes pleistocénicos de la Cuenca de México

open access: hybridGeofísica Internacional, 1989
Se analiza el contenido palinológico de un sondeo de 80 m del ex-lago de Tcxcoco, para establecer una palinoestratigrafía a través del análisis paleoecológica y paleoclimático.
Socorro Lozano García
doaj   +4 more sources

Intraskeletal histovariability and skeletochronology in an ornithopod dinosaur from the Maestrazgo Basin (Teruel, Spain). [PDF]

open access: yesJ Anat
Abstract Ornithopods are an extinct group of dinosaurs that were particularly abundant and diverse in the Cretaceous of the Iberian Peninsula, and whose abundance in the Maestrazgo Basin has allowed numerous taxa to be identified over the last decade. Many of these fossil remains are still taxonomically indeterminate and require a more detailed study ...
Maíllo J   +4 more
europepmc   +2 more sources

Blowin' in the Wind: Mapping the Dispersion of Metal(loid)s From Atacama Mining. [PDF]

open access: yesGeohealth
Abstract The Atacama Desert’s naturally elevated metal(loid)s pose a unique challenge for assessing the environmental impact of mining, particularly for indigenous communities residing in these areas. This study investigates how copper mining influences the dispersion of these elements in the wind‐transportable fraction (<75 μm) of surface sediments ...
Zanetta-Colombo NC   +9 more
europepmc   +2 more sources

Primera aproximacion a la Paleoentomología de los yacimientos de la Sierra de Atapuerca (Burgos, España): la fauna subfósil de Oribátidos (Acari, Oribatida) [PDF]

open access: yesGraellsia, 2007
Los yacimientos cuaternarios de la Sierra de Atapuerca ofrecen interés mundial por haber hospedado varias especies de homínidos que vivieron en el último millón de años.
J. Arroyo   +6 more
doaj   +3 more sources

Los paleoambientes holocenicos de la laguna babicora, Chihuahua, México

open access: yesGeofísica Internacional, 1995
En la región semiárida de la Laguna de Babícora, al noroeste del Estado de Chihuahua, se estudiaron ocho perfiles estratigráficos que cubren temporalmente el intervalo del Estadía Isotópico I.
José R. Ortega-Ramírez
doaj   +2 more sources

Contribuição da morfologia dos fósseis para dedução de paleoambientes

open access: diamondRevista do Instituto Geológico, 1980
O restos fossilizados dos seres que viveram antes da época atual podem servir para deduções dos ambientes em que esses seres viveram. Estando os organismos adaptados ao modo de vida, deduz-se serem de particular importância as formas anatômicas derivadas dessas adaptações.
Percy Corrêa Vieira
openalex   +4 more sources

Dispersal of Late Triassic clam shrimps across Pangea linking northwestern Gondwana and central Pangea rift basins. [PDF]

open access: yesSci Rep
Clam shrimps are a group of freshwater crustaceans who prospered during the Late Triassic. They were abundant in lacustrine sedimentary records of continental basins distributed throughout Pangea during this time. However, they show significant taxonomic
Alarcón CM   +4 more
europepmc   +2 more sources

A Fauna de Morcegos Fósseis como Ferramenta na Caracterização de Paleoambientes Quaternários. [PDF]

open access: yesAnuário do Instituto de Geociências, 2007
This study proposes to reconstruct the paleoenvironment from Quaternary sites of the caves in the sertão baiano and Lagoa Santa region during the Pleistocene.
Leonardo Santos Avilla   +5 more
doaj   +4 more sources

Paleoambientes de la cuenca media del río Luján (Buenos Aires, Argentina) durante el último período glacial (EIO 4-2) [PDF]

open access: green, 2010
El objetivo de este trabajo es definir unidades depositacionales y realizar inferencias paleoambientales a partir del análisis de facies y del contenido paleobiológico (moluscos, fitolitos y diatomeas) de depósitos acotados cronológicamente entre ca. <
Blasi, Adriana Mónica   +10 more
core   +3 more sources

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