1977年5月1日 · Braided-stream deposits consist of up to three gravel facies, five sand facies and two fine-grained facies. Vertical sequences recorded in modern and ancient deposits are of …

Lithofacies characters of the rock succession suggest sedimentation took place in a piedmont fan environment, adjacent to a rising orogeny in an active foreland basin setting.

sandy braided stream deposit is a fining-up succession (Fig. 6) initiated with an erosion surface marking base of channel, which is successively overlain by cross- stratified …

Examples show: (A) Repeated fining upward (FU) sequences (usually less than 2m thick); (B) Repeated FU sequences which are structurally and lithologically more complex than in A, and …

braided river deposits for its low precision, high resolution sequence stratigraphy (HRSS) theory is used. Based on this theory, (1) base level is a potentiometric surface, not a definite one, and …

2012年7月6日 · The nature of the fine overbank part of the braided stream cycle is as complex as the coarse lower, so that a highly variable vertical sequence of lithological types is likely to be …

1999年12月1日 · In this paper we describe two approaches to quantify heterogeneity in braided stream deposits. One approach involved mapping a 50 m by 60 m section of a 3.3 m high …

When sediments are well sorted, braided stream deposits show little variation either vertically or laterally. Both porosity and permeability are high, forming excellent reservoirs. This textural …

properties: braided and meandering. Braided streams are marked depositionally by variable discharge rates, flow that is not confined to a single channel, high sediment load transported

Detailed studies of cores from wells drilled for hydrocarbons show a distinctive vertical sequence in braided-stream deposits. Cores studied came from widely separated areas around the world …