By Sadoon Morad
Carbonate cements are quite common and ample in clastic sequences. They profoundly impact the standard of hydrocarbon reservoirs and provide very important info on palaeoenvironments and the chemical composition and move styles of fluids in sedimentary basins. regardless of this significance, their distribution styles in time and area and their geochemical evolution usually are not but deeply explored and elucidated. This exact e-book includes 21 overview papers and case stories on carbonate cementation in clastic sequences written by way of invited experts at the topic. those papers current a large and deep insurance that increase our wisdom approximately carbonate cementation in quite a few clastic depositional environments, tectonic settings and burial histories. The booklet can be of designated curiosity to researchers, petroleum geologists and academics and scholars on the postgraduate point. while you are a member of the overseas organization of Sedimentologists, for getting info, please see: http://www.iasnet.org/publications/details.asp?code=SP26
Read or Download Carbonate Cementation in Sandstones: Distribution Patterns and Geochemical Evolution (IAS Special Publication 26) PDF
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Extra info for Carbonate Cementation in Sandstones: Distribution Patterns and Geochemical Evolution (IAS Special Publication 26)
3-1 m thick, and occasionally can be of great lateral extent (>I km) (Fig. 7). 5-3 em diameter). These thin bedded units are generally less than l 0 m in lateral extent. Other outcrops are characterized by millimetre sized calcite-filled fractures that are in places irreg ular, unoriented and fenestral, and sometimes re semble small folds (Fig. l l C). Original sedimentary structures are generally not preserved. These units may also be associated with tubular, rod and platy concretions.
V 1\ Thinly bedded type ! units ------ooco. DEGREE OF CEMENTATION �� 0 ----------------------_ ------------- - --------------- . J trough cross-stratificaton /// high angle planar bedding u .. . . �� · · ·· ·... ·. · . .. �: ... r: GRAIN SIZE Some are elongate, othere are irregular type-! tabular units. Moderately cemented type-! tabular units. These units are coarser and better sorted than those above and below them. Fig. 6. Str a tigr ap h i ca l o c lumn showing d te a i ls of th er le taionshi p s b tew ee n gr a i n siz e, lithology , sorting a nd d g er eeof ce m n e t taion in s d e im n e ts from th eC h a m is aM se a a n d Ca n a d aPill a r se M m e b res.
S. & HOERNLE, K. ( 1 990) Geochemistry of carbonate cements in the Sag River and Shublik Forma tions (Triassic/Jurassic), North Slope, Alaska: implica tions for the geochemical evolution of formation waters. Sedimentology, 37 , 8 1 7-836. MUIR WooD, R. ( 1 993) Earthquakes, strain-cycling and the mobilization of fluids. In: Geofluids: Origin, Migra tion and Evolution ofFluids in Sedimentary Basins (Ed. ), Spec. Publ. geol. Soc. London, 78, 85-98. S. F. ( 1 984) Methane-derived high-Mg calcite submarine cement in Holocene nodules from the Fraser Delta, British Columbia, Canada.