Results 171 to 180 of about 8,608 (219)

Early and Late Diagenetic Chert in Carbonate Turbidites of the Senonian Flysch, Northeast Bilbao, Spain

1989
Sedimentological and petrographical analysis of the lower Senonian flysch (Plencia Fm.), near Barrika village, and a part of the upper Senonian flysch (Eibar Fm.) show three types of diagenetic silicification: Bedded and nodular chert, chert in poorly developed laminites, and fracture-related chert.
J. J. Elorza, M. A. Bustillo
exaly   +2 more sources

Facies analysis of late Proterozoic carbonate turbidites in the Zerrissene Basin, Damara Orogen, Namibia

Journal of African Earth Sciences (and the Middle East), 1992
Abstract Two late Proterozoic carbonate horizons, the Brandberg West and Gemsbok River Formations, are well exposed in the Zerrissene Basin of the Damara Orogen in west-central Namibia. These two units are interbedded with deep marine grey wackes and schists which were deposited in an outer-fan environment. The lower parts of both formations comprise
exaly   +2 more sources

From Turbidites to Carbonates: Breaking Paradigms in Deep Waters

All Days, 2009
Abstract In the beginning of exploration of the Brazilian Continental Shelf, Petrobras focused its exploratory efforts on deltaic sequences and a discovery was done in the offshore extension of the Sergipe-Alagoas Basin.
Mario Carminatti, Jeferson Dias, Breno Wolff   +2 more
openaire   +1 more source

Biopressured carbonate turbidite sediments: A mechanism for submarine slumping

Geology, 1987
Submarine slump masses and intraformational breccias at the type Devonian Devils Gate Limestone in central Nevada originated because of fluidization of selected layers in a partially lithified, turbidite-dominated sediment column. Fluidization and the development of shear planes that border the slumps resulted from increased microbially generated gas ...
Robert B. Nelson, Nancy Lindsley
openaire   +1 more source

Mixed terrigenous—Carbonate sedimentation in the Hispaniola—Caicos turbidite basin

Marine Geology, 1977
Abstract Sedimentation in the 9500 km 2 , 4100 m deep Hispaniola—Caicos Basin is dominated by turbidity currents. Carbonate turbidites originate from the Bahama Islands, Great Inagua and Caicos at the north end of the basin. Mixed carbonate—non-carbonate flows come from Hispaniola and perhaps Cuba.
Patrick S. Ditty, Carol J. Harmon, Orrin H. Pilkey, Mahlon M. Ball, Evan S. Richardson   +4 more
openaire   +1 more source

Late Cretaceous Carbonate Turbidites of the Northern Apennines: Shaking Adria at the Onset of Alpine Collision

The Journal of Geology, 2004
Thick and regionally widespread deepwater carbonate turbidite successions, the Upper Cretaceous Helminthoid Flysch, were deposited during the initial stages of Alpine collision. Despite the dominant intrabasinal origin, bulk composition and heavy minerals of minor terrigenous mode indicate provenance from different crustal levels of the European and ...
ARGNANI A., FONTANA D., STEFANI, CRISTINA, ZUFFA G. G.   +3 more
openaire   +4 more sources

Carbonate Turbidites, Gulf of Mexico

SEPM Journal of Sedimentary Research, 1968
ABSTRACT Carbonates of shallow water origin have been recovered from an area of some 39,000 square miles in the Gulf of Mexico abyssal plain. These carbonates occur most commonly as layers of variable thickness (2-120 cm) in cores of Pleistocene-Recent sediments.
openaire   +1 more source

Carbonate Debris Sheets and Turbidites, Exuma Sound, Bahamas

SEPM Journal of Sedimentary Research, 1980
ABSTRACT Gravity-displaced carbonate sediments on the lower slope and basin floor of a Bahamian intra-platform basin were studied using closely-spaced sediment cores up to 5 m in length, 1500 km of precision depth survey, and 3.5 kHz seismic surveys.
openaire   +1 more source

Palaeogeography of the Upper Cretaceous-Eocene carbonate turbidites of the Northern Apennines from provenance studies

Geological Society, London, Special Publications, 2006
Abstract The Upper Cretaceous Helminthoid Flysch (HF) of the Northern Apennines consists of thick and regionally widespread deep-water carbonate turbidite successions, deposited during the initial stages of Alpine collision. The HF spans the time from Turonian to Early Eocene and is mainly composed of intrabasinal carbonate ooze mixed with ...
ARGNANI A., FONTANA, Daniela, STEFANI C., ZUFFA G. G.   +3 more
openaire   +1 more source

Silver Abyssal Plain Carbonate Turbidite: Flow Characteristics

The Journal of Geology, 1981
Approximately 20000 years ago, the main part of a large turbidity current was channeled between the Caicos Outer Ridge and the Bahama Escarpment until it spread fanwise across the central Silver Abyssal Plain floor. Unusual grain size and compositional changes in the turbidite appear to have been produced by surges superimposed on the main flow.
openaire   +1 more source