Results 91 to 100 of about 20,360 (229)
High- and Low-Ti tholeiites in the Eastern Parnaíba Basin: Regional correlations with Mesozoic large igneous provinces [PDF]
Brazilian Journal of GeologyTwo tholeiitic magmatic events are recorded at the Eastern Border of the Parnaíba Basin comprising the Jurassic Mosquito Formation and the Cretaceous Sardinha Formation.
Cícera Neysi de Almeida +10 more
doaj +1 more source
Oxygen Isotope Variations of Basaltic Lavas and Upper Mantle Rocks [PDF]
, 2001 This chapter summarizes the oxygen isotope geochemistry of terrestrial basalts and their mantle sources, including the conceptual framework for interpreting such data and the phenomenology of known variations.
Eiler, John M.
core
Subcratonic low‐velocity layer and flood basalts
Geophysical Research Letters, 2002 Teleseismic recordings of several seismograph stations are processed with the aid of the S receiver function technique [Farra and Vinnik, 2000]. The data provide evidence of a strong reduction of S velocity at a depth around 360 km (station BOSA) and 280–300 km (station LBTB) in the East of southern Africa.
Vinnik, L., Farra, V.
openaire +4 more sources
High resolution bathymetric survey on the NW slope of Walvis Ridge, offshore Namibia [PDF]
, 2011 Expedition 17/1 of the German research vessel R/V MARIA S. MERIAN, carried out geophysical surveys and experiments between November and December 2010 in the area around Walvis Ridge, Southeast Atlantic Ocean.
Behrmann, Jan H. +2 more
core
Geochemistry, Geophysics, GeosystemsFlood basalts of the mid‐Miocene Columbia River Basalt Group (CRBG) cover 210,000 km2 of Washington, Oregon, and Idaho. The source of CRBG melt is debated; widely spaced feeder dike swarms can be projected toward hypothetical sources near the Oregon ...
Margaret S. Avery, Anthony F. Pivarunas
doaj +1 more source
Field trip stop descriptions [PDF]
Fifteen sites within the channeled scabland were selected as stops with the dual aim of visiting locations critical to the arguments for a catastrophic flood origin of the scablands, as well as permitting an examination of the variability in both ...
Nummedal, D.
core +1 more source
Cenozoic Carbon Dioxide: The 66 Ma Solution
GeosciencesThe trend in partial pressure of atmospheric CO2, P(CO2), across the 66 MYr of the Cenozoic requires elucidation and explanation. The Null Hypothesis sets sea surface temperature (SST) as the baseline driver for Cenozoic P(CO2).
Patrick Frank
doaj +1 more source
Terrestrial Analogs to Titan for Geophysical Research
Reviews of Geophysics, Volume 64, Issue 2, June 2026.Abstract Saturn's moon Titan exhibits remarkable parallels to the Earth in many geophysical and geological processes not found elsewhere in the solar system at the present day. These include a nitrogen atmosphere with a condensible gas—methane—replacing the Earth's water, leading to an active meteorology with rainfall and surface manifestations ...
Conor A. Nixon +21 more
wiley +1 more source
Large-scale erosional and depositional features of the Channeled Scabland [PDF]
The channeled scabland is a great anastomosing complex of highly overfit stand channels eroded into the basalt bedrock and overlying sediments of the Columbia Plateau.
Baker, V. R.
core +1 more source
Gully erosion in India: Geo‐environmental controls and region‐specific characteristics
Geographical Research, Volume 64, Issue 2, May 2026.Spatial statistical analyses using a novel spatial database of India‧s gully erosion landforms revealed that India has six major gullying‐affected regions, three of which (EU, DU, and KCH) are dominated by gully systems (gully networks), with badlands (vast intensely gullied landscapes) being predominant in the other three regions (YB, GP, and RU ...
Anindya Majhi +3 more
wiley +1 more source