Lithofabric Classification and Distribution of Coarse-Grained Deep-water Clastic Depositional Systems

2018 ◽  
pp. 39-96
Keyword(s):  
Deep Water ◽  
Coarse Grained ◽  
Depositional Systems

scholarly journals Eocene-Oligocene sedimentation in the external areas of the Moldavide Basin (Marginal Folds Nappe, Eastern Carpathians, Romania): sedimentological, paleontological and petrographic approaches

2009 ◽  
Vol 60 (5) ◽  
pp. 397-417 ◽  
Author(s):  
Crina Miclăuş ◽  
Francesco Loiacono ◽  
Diego Puglisi ◽  
Dorin Baciu
Keyword(s):  
Source Area ◽  
Late Eocene ◽  
Low Rank ◽  
Coarse Grained ◽  
Facies Association ◽  
Compositional Uniformity ◽  
Eastern Carpathians ◽  
Extensional Tectonic ◽  
Facies Associations ◽  
Depositional Systems

Eocene-Oligocene sedimentation in the external areas of the Moldavide Basin (Marginal Folds Nappe, Eastern Carpathians, Romania): sedimentological, paleontological and petrographic approachesThe Marginal Folds Nappe is one of the most external tectonic units of the Moldavide Nappe System (Eastern Carpathians), formed by Cretaceous to Tertiary flysch and molasse deposits, piled up during the Miocene closure of the East Carpathian Flysch basin, cropping out in several tectonic half-windows, the Bistriţa half-window being one of them. The deposits of this tectonic unit were accumulated in anoxic-oxic-anoxic conditions, in a forebulge depozone (sensuDeCelles & Giles 1996), and consist of a pelitic background sporadically interrupted by coarse-grained events. During the Late Eocene the sedimentation registered a transition from calcareous (Doamna Limestones) to pelitic (Bisericani Beds) grading to Globigerina Marls at the Eocene-Oligocene boundary, and upward during the Oligocene in deposits rich in organic matter (Lower Menilites, Bituminous Marls, Lower and Upper Dysodilic Shales) with coarsegrained interlayers. Seven facies associations were recognized, and interpreted as depositional systems of shallow to deeper water on a ramp-type margin. Two mixed depositional systems of turbidite-like facies association separated by a thick pelitic interval (Bituminous Marls) have been recognized. They were supplied by a "green schists" source area of Central Dobrogea type. The petrography of the sandstone beds shows an excellent compositional uniformity (quartzarenite-like rocks), probably representing a first cycle detritus derived from low rank metamorphic sources, connected with the forebulge relief developed on such a basement. The sedimentation was controlled mainly by different subsidence of blocks created by extensional tectonic affecting the ramp-type margin of the forebulge depozone.

Process-Based Modeling of Deep Water Depositional Systems

2010 ◽  
pp. 88-112 ◽  
Author(s):  
Tao Sun ◽  
Kaveh Ghayour ◽  
Brendon Hall ◽  
James Miller
Keyword(s):  
Deep Water ◽  
Depositional Systems

Quaternary evolution of the intermontane Val d'Agri Basin, Southern Apennines

2009 ◽  
Vol 72 (3) ◽  
pp. 431-442 ◽  
Author(s):  
Irene Zembo ◽  
Laura Panzeri ◽  
Anna Galli ◽  
Riccardo Bersezio ◽  
Marco Martini ◽  
...  
Keyword(s):  
Alluvial Fan ◽  
Optically Stimulated Luminescence ◽  
Coarse Grained ◽  
Subsequent Stage ◽  
Alluvial Fans ◽  
Southern Apennines ◽  
Short Period ◽  
Depositional Systems ◽  
Geochronological Constraints ◽  
Osl Age

AbstractOptically Stimulated Luminescence (OSL) enables the chronology of the late Pleistocene evolution for the Val d'Agri intermontane basin of Southern Apennines to be defined in the frame of Mediterranean geodynamic and climate changes. Quartz sand from braided floodplain and alluvial fan depositional systems was analyzed using the coarse-grained, single-aliquot regenerative-dose (SAR) technique. The obtained optical ages are mostly consistent with other assessments (radiocarbon, tephrochronology) and stratigraphic constraints. OSL allows for the dating to 56–43 ka of an asymmetric subsidence stage that forced alluvial fan progradation, filling of a former lacustrine area, and development of an axial alluvial plain. A short period of Mediterranean-type pedogenesis, recorded at the top of the prograding-aggrading fans (OSL age bracket 43–32 ka), corresponds with MIS 3. During the subsequent stage of decline of vegetation cover, possibly corresponding to MIS 2, the latest progradation of alluvial fans occurred. The subsequent uplift and breakthrough of the basin threshold during the latest Pleistocene and Holocene induced entrenchment of the drainage network. The results presented here provide an example of the usefulness of OSL dating in intermontane continental settings where other geochronological constraints are scarce.

Salt tectonic controls on deep-water turbidite depositional systems: Miocene, southwestern Lower Congo Basin, offshore Angola

2014 ◽  
Vol 26 (4) ◽  
pp. 597-620 ◽  
Author(s):  
A. P. Oluboyo ◽  
R. L. Gawthorpe ◽  
K. Bakke ◽  
F. Hadler-Jacobsen
Keyword(s):  
Deep Water ◽  
Congo Basin ◽  
Depositional Systems

scholarly journals The palaeogeographical background of Late Devonian storm events in the western part of the Holy Cross Mountains (Poland)

Geologos ◽  
2013 ◽  
Vol 19 (4) ◽  
pp. 257-272 ◽  
Author(s):  
Aleksandra Vierek
Keyword(s):  
Coarse Grained ◽  
Late Devonian ◽  
Storm Events ◽  
Diagnostic Features ◽  
Shallow Marine ◽  
Tsunami Waves ◽  
Holy Cross Mountains ◽  
Depositional Systems ◽  
Tsunami Energy ◽  
Carbonate Deposits

Abstract Late Devonian coarse-grained carbonate deposits in the Holy Cross Mountains were studied for possible storm depositional systems and catastrophic tsunami events, as it must be assumed that the investigated area was strongly affected by tropical hurricanes generated in the open ocean North of Gondwana. This assumption appears consistent with diagnostic features of carbonate tempestites at several places in the Holy Cross Mountains. Sedimentary structures and textures that indicate so are, among other evidence, erosional bases with sole marks, graded units, intra- and bioclasts, different laminations and burrowing at the tops of tempestite layers. It has been suggested before that a tsunami occurred during the Late Devonian, but the Laurussian shelf had an extensional regime at the time, which excludes intensive seismic activity. The shelf environment also excluded the generation of tsunami waves because the depth was too shallow. Additionally, the Holy Cross Mountains region was surrounded in the Devonian by shallow-marine and stable elevated areas: the Nida Platform, the Opatkowice Platform and the Cracow Platform to the South, and the elevated Lublin-Lviv area to the NE. Thus, tsunami energy should have been absorbed by these regions if tsunamites would have occurred.

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