Opening book details…
Can I read Post-depositional alteration and preservation of sedimentary event layers on continental margins, I. The role of episodic sedimentation on EtoBox?
Post-depositional alteration and preservation of sedimentary event layers on continental margins, I. The role of episodic sedimentation by Robert A Wheatcroft; David E Drake is a Earth and Planetary Sciences article available to read on EtoBox.
What is Post-depositional alteration and preservation of sedimentary event layers on continental margins, I. The role of episodic sedimentation about?
The degree of post-depositional alteration and hence the preservation potential of sedimentary event beds and transient signals is determined by the outcome of a 'race' between biological (and to a lesser extent physical) processes that conspire to destroy a signal and sediment accumulation which advects the layer or signal out of the surface mixing zone. Preservation potential specifically depends on the relative magnitudes of the (1) biological mixing intensity (sometimes parameterized as a biodiffusivity, D b ), (2) mixing-layer thickness, (3) layer or signal thickness, and (4) sediment accumulation rate. These terms control the dissipation time (i.e. time required to destroy a signal) and the transit time (i.e. time necessary to advect a signal through the surface mixing layer). On fine-grained, upper continental margins in general, and the Eel River shelf (northern California) in particular, biological mixing intensity is high (i.e. D b ranges from 10 to 100 cm 2 /yr), mixing-layer thickness is large ( s 10 cm), and sediment accumulation rates are rapid (0.1^1 cm/yr). Despite the high sediment accumulation rates, transit times through the surface mixinglayer range from decades
Who reads Post-depositional alteration and preservation of sedimentary event layers on continental margins, I. The role of episodic sedimentation?
It is typically read by researchers, students, and practitioners in Earth and Planetary Sciences.
- Author
- Robert A Wheatcroft; David E Drake
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0025-3227)
- Published
- 2003
- Language
- EN
- Field
- Earth and Planetary Sciences (Physical Sciences)