Results 31 to 40 of about 2,493,652 (215)

Diagenesis of Late Miocene micritic lacustrine carbonates, Madrid Basin, Spain [PDF]

open access: yesSedimentary Geology, 1997
Mud-grade lacustrine limestones of Miocene age from the Madrid Basin, Spain, reveal varied and complex diagenetic histories. Microporous micrites occur as well as micrites with anhedral mosaics. The micrites have recrystallized from a metastable precursor, in part under sub-oxic meteoric diagenetic conditions probably before extensive karstification in
Wright, V.P.   +3 more
openaire   +2 more sources

First GPS measurements across the Central-Western Mediterranean area

open access: yesAnnals of Geophysics, 1999
This paper concerns the displacement field of the central-western part of the Mediterranean basin estimated by the analysis of three repeated GPS surveys (1995, 1996 and 1997) consisting of 8 sites of a network.
N. Saadi   +9 more
doaj   +1 more source

Geoarchaeology and Heritage Management: Identifying and Quantifying Multi-Scalar Erosional Processes at Kisese II Rockshelter, Tanzania

open access: yesFrontiers in Earth Science, 2022
Natural and anthropogenically induced soil erosion can cause serious loss of the archaeological record. Our work shows the value of multi-scalar geoarchaeological study when excavating and re-excavating rockshelters in a highly dynamic sedimentary ...
Ilaria Patania   +19 more
doaj   +1 more source

Delaware River: State of the Basin Report, 2008

open access: yes, 2008
The Delaware River Basin Commission State of the Basin Report 2008 is designed to serve as a benchmark of current conditions and a point of reference for gaging progress toward management goals.

core   +1 more source

Gurupá - das ruínas aos cemitérios Gurupá: from the ruins to the cemeteries

open access: yesEstudos Avançados, 2012
Posterior ao Tratado de Madrid (1750), o governo do Marquês de Pombal (1750-1777) implanta o projeto moderno nacional de caráter imperial nas colônias portuguesas.
Gunter Karl Pressler
doaj   +1 more source

Increasing crop rotational diversity can enhance cereal yields

open access: yesCommunications Earth & Environment, 2023
Increasing crop functional richness in rotations can support grain yields more than species diversity in many environments, suggest grain yield data from 32 long-term experiments across Europe and North America.
Monique E. Smith   +35 more
doaj   +1 more source

Delaware River Basin Commission Annual Report 2004-2005

open access: yes, 2006
The Delaware River Basin Commission (DRBC) is an interstate/federal agency that manages the water resources within the 13,539-square-mile basin covering portions of Delaware, New Jersey, New York, and Pennsylvania.

core   +1 more source

Hydrologic Conditions in the Delaware River Basin, Annual Report 2003

open access: yes, 2004
This is an Annual Report of the hydrological conditions in the Delaware River Basin for 2003. It includes an update on the lingering effects of the 2001-2002 drought, as well as summaries of preciptation, streamflow, reservoir storage, ground water, and ...

core   +1 more source

Revision of Varanus marathonensis (Squamata, Varanidae) based on historical and new material: morphology, systematics, and paleobiogeography of the European monitor lizards.

open access: yesPLoS ONE, 2018
Monitor lizards (genus Varanus) inhabited Europe at least from the early Miocene to the Pleistocene. Their fossil record is limited to about 40 localities that have provided mostly isolated vertebrae. Due to the poor diagnostic value of these fossils, it
Andrea Villa   +11 more
doaj   +1 more source

Dental anomalies in Pleistocene African hippopotamuses from Olduvai Bed II

open access: yesThe Anatomical Record, EarlyView.
Abstract Hippopotamuses are key palaeoenvironmental indicators in African Pleistocene ecosystems due to their ecological dependence on permanent water bodies and their frequent representation in the fossil record. This study examines dental anomalies in Hippopotamus cf. gorgops from several localities in Bed II of Olduvai Gorge (Tanzania), dated to ca.
Darío Fidalgo   +4 more
wiley   +1 more source

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