The Upper Devonian Xinghongpu Formation is made up of clastic rocks
(siltstones and sandstones) with some foliated limestones [32, 34].
During diagenetic process, matrix of clastic rocks
could be transformed or dissolved, and materials might partly or totally enter into pore fluids as ions or complexes.
The investigated area is located at the eastern margin of the Tibetan Plateau, in which there are four major fault zones named as Minjiang fault (MJF), Longmenshan fault (LMSF), Xianshuihe fault (XSHF) and Anninghe fault (ANHF) zones (Figure 1) where earthquakes frequently occurred .Triassic littoral-neritic clastic rocks
interbeded with carbonate and intrusive granite are exposed in the west of the LMSF and ANHF zones, but the strata from Late Paleozoic to Cenozoic are widespread exposed in the LMSF and ANHF zones and on the east of the fault zones, and granite is found in the intersection of the LMSF, XSHF and ANHF zones [27-30].
What dominated the porosity and permeability of tight clastic rock
This well was tested to produce approximately 6,600 barrels and 4.5m cubic feet of natural gas per day, creating the highest capacity of clastic rocks
The Kotlin sedimentation of the Vendian (Ediacaran) complex (ca 540-610 million years old) is represented by clastic rocks
(sandstone, siltstone, claystone).
The hole intersected the unconformity at the base of Mississippian clastic rocks
and the Devonian Devils Gate Limestone at 85 metres, which is the host for previously tested shallow gold mineralization.
A stratigraphic and sedimentologic analysis of some Lower and Middle Silurian clastic rocks
of the north-central Appalachians.
Sedimentologists have an important perspective on extreme weather because many of the rocks that we see, particularly clastic rocks
, are the deposits of floods or storms.
Limestones are the dominant lithofacies, but clastic rocks
and coal beds are also present.