Mariano Germán Arregui

Mariano Germán Arregui
YPF | YPF · YPF Tecnología S.A.

Phd

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7
Publications
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9
Citations

Publications

Publications (7)
Article
In the fossil record of South America, both ground sloths and their tracks are well known. However, most tracks described were assignable to megatherians and mylodontids, while tracks assignable to scelidotheriines show a very scarce record. In this contribution, we present new records of fossil tracks assignable to scelidotheriines and review and...
Conference Paper
Full-text available
Reconocida por ser portadora de una gran variedad de trazas fósiles, la Formación Balcarce (Ordovícico–Silúrico) está compuesta por cuarcitas de origen marino. Sus rocas afloran en las serranías del Sistema de Tandilia, en el sudeste de la provincia de Buenos Aires. Además, están presentes en los bloques—obtenidos mediante la actividad minera local...
Conference Paper
Full-text available
The Middle Jurassic Lajas Formation of the Neuquén Basin (Argentina) records marginal marine sediments, mainly as deltaic systems. However, there is still controversy regarding its dominant process. The Lajas Formation has been interpreted as a tide-dominated delta, fluvio-dominated delta with hyperpycnal discharges, fluvio-dominated with tidal mod...
Conference Paper
Full-text available
Study of the origin of anomalous resistivities in the Lajas Formation Near Loma La Lata and Sierra Barrosa fields, Lajas Formation thickness reaches up to 1000m of sediment that includes fine to coarse sandstone to subordinated conglomerates with tight features including low porosity and permeability values, 0.001 to 0.03 mD. These reservoirs exhib...
Article
The Middle Jurassic Lajas Formation of the Neuquén Basin (Argentina) records mainly deltaic sedimentation. However, the precise role of the depositional mechanisms involved is still controversial. Well core YPF Nq. Laj-8 records the overall vertical transition from delta-front mouth bars to delta plain. Discrete mouth-bar successions typically comp...
Article
Full-text available
The analysis of paleoichnites and trackways corresponding to Holarctic ungulates, from the late Pleistocene (Lujanian Stage/Age) of Pehuen Co and Laguna del Monte tracksites (Buenos Aires Province, Argentina), allows the recognition of several clinical signs (ich-nopathologies) that reflect some of the main pedal affections and alterations experien...
Conference Paper
Full-text available
En los niveles superiores de la sección Punta Ninfas de la Formación Puerto Madryn son comunes los restos de juveniles de un mytílido referible a una especie de Perna cuyo registro se conoce solamente de esta unidad estratigráfica. Los adultos son comunes en localidades de Península Valdés en las que aflora esta unidad. Mientras que en estas última...

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Projects

Projects (2)
Project
Contribute to a comprehensive environmental study of the Lajas Formation from an ichnological point of view , based on detailed studies of trace fossils in cores and on outcrops.