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1
Sedimentary Rocks in the Field: A Practical Guide
PALAEOCURRENT. ANALYSIS. 7.1. Introduction. The measurement of
palaeocurrents is a vital part of the study of sedimentary rocks, since they provide
information on the palaeogeography, palaeoslope, current and wind directions
and they ...
The measurement of palaeocurrents in the field should become a routine
procedure; a palaeocurrent direction is an important attribute of a lithofacies and
necessary for its complete description. Many different features of a sedimentary
rock ...
3
Sedimentary Petrology: An Introduction to the Origin of ...
Although the more data one has the more accurate is the palaeocurrent picture,
some 20–30 readings for a locality or small area can be sufficient if dealing with a
unimodal current system; for a bimodal or polymodal current system, more ...
4
Tectonic Controls and Signatures in Sedimentary Successions: ...
PALAEOCURRENT ANALYSES Discussion of previous palaeocurrent analysis
Certain aspects of Williams' (1966, 1969a) methodology for both measuring and
analysing palaeo— current data may have led to an incorrect interpretation of ...
5
Alluvial Sedimentation: Special Publication 17 of the IAS
Palaeocurrent indicators document an eastward palaeoflow for white sandstones
of the Dhok Pathan section. Palaeocurrent indicators collected from brown
sandstone strata indicate a clear NNE flow direction (Figs 7 & 8A). The basal
brown ...
M. Marzo, C. Puigdefabregas, 2009
6
Fluvial Sedimentology VI: (Special Publication 28 of the IAS)
Spatial distribution of palaeocurrent directions measured from trough cross-
stratified sand in FA2 and FA3. Two overlapping radiating domains can be
identified. Orientations of elongate wood fragments in lignite beds also are
shown.
Norman D. Smith, John Rogers, 2009
7
Industrial Pollution & Management
27 Palaeocurrent Analysis From Current Beddings and Pebbles of Tura
Sandstone Group of Rocks Occurring in and Around Rangram Area, Meghalaya
Mahananda Borah, Anima Gogoi & P.K. Das1 ABSTRACT Cross-bedding forest
direction ...
8
Precambrian Sedimentary Environments: A Modern Approach to ...
PALAEOCURRENT DATA Measuring viable palaeocurrent directions in
Archaean rocks is difficult due to the degree of deformation, metamorphic grade,
and scarcity of exposures suitable for direct palaeocurrent measurement. None
the less ...
Wladyslaw Altermann, Patricia Corcoran, 2009
9
Sedimentary Environments Offshore Norway-Palaeozoic to Recent
A significant thickness variation is observed both along and across the
palaeocurrent. Main generic and geometrical types of the TBDM sandstones
found in the outcrop studies The above-described geometries and
sedimentological features ...
O.J. Martinsen, T. Dreyer, 2001
10
Sequence Stratigraphy and Facies Associations: Special ...
PROVENANCE, CURRENT AND WAVE—RIPPLE PATTERNS Palaeocurrent
directions are interpreted from foreset dip directions of fluvial cross-bedding and
crosslamination. Directions of wave oscillations are interpreted from wave-ripple
...
Henry W. Posamentier, 2009
ȘTIRI NOI CARE INCLUD TERMENUL «PALAEOCURRENT»
Află ce ziare naționale și internaționale au scris despre și cum este întrebuințat termenul
palaeocurrent în contextul următoarelor știri.
Mammalian biodiversity on Madagascar controlled by ocean currents
One implication is that rafting may be the dominant means of overseas dispersal in the Cenozoic era when palaeocurrent directions are ... «Nature.com, Ian 10»
