Stratigraphy Of Jurassic

Stratigraphy of the Jurassic Upper Jurassic The Upper Jurassic is described in the record by a low-relief transition from shallow-water into basinal facies (Winker & Buffer, 1988). Further, there is little to no evidence of seismic expression It has been documented that there are facies tracts from past basinal marine all the way to shallow marine as well as nonmarine in this area. In addition to this, the oldest confirmed Mesozoic sediments classified as marine in the province of the basin also include basinal facies Sediments in the Upper Jurassic comprise a placid mixture of carbonates and clastics (Winker & Buffer, 1988). Structural deformation of the Upper Jurassic is studied through seismic profiles and has been said (Winker &
The Middle Jurassic area is dominates by nonmarine red beds. These beds rarely reach much less exceed anything larger than 100 m in thickness (Salvador, 1987). It has also been reported that conglomerates are more likely to be seen towards the base of this section. In addition to these, this unit is also comprised of coarse-grained sandstones, siltstones, and dark-shales bearing plant matter (Salvador, 1987). As far as evidence of basinal facies, or any type of facies for that matter, go... there is just slim to none; however, basinal marine sediments are quite abundant and appear to represent a westward embayment strata form (Winker & Buffler, 1988). Salvador, 1987
The Lower Jurassic The Lower Jurassic is very complex. The marine section is primarily composed of dark shales and siltstones that are typically calcareous, carbonaceous, and micaceous. The upper part of the Lower Jurassic is mostly of sandy terrane, it is more carbonaceous, also abundant plant remains can still be found within the layers (Salvador, 1987). The Early Jurassic Evidence of the Early Jurassic indicates that grabens with red-bed sequences, which were intruded with basalt dikes and sills, were abundantly deposited and continued to remain active and continued to be filled with fluvial, freshwater, and lacustrine sediments into later dates (Salvador, 1987). Salvador,
Kennedy et al (2011) describes the Gulf Basin a “vital economic engine for the Nation”, as it continues to drive trillions of dollars into the economy annually as well as providing a large number of jobs for people all over the United States. Along with coastal economy, there is oil and gas production, waterborne commerce, commercial fishing, and also marine recreational fishing (Kennedy et al., 2011). The region of the Gulf of Mexico that is the oil and gas industry is considered to be one of the most developed and valuable in the world. It continues to supply the region with jobs as well as the Nation with a rather large and respected energy source (Kennedy et al., 2011). Before now, I was unsure of the definition of the term ‘waterborne commerce’ – well, basically, it is imported goods! (Thanks Google Dictionary). The economy of the United States heavily relies on the leading ports in the Gulf for both foreign and domestic goods (Kennedy et al.,