Saved in:
| Main Author: | |
|---|---|
| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
2021
|
| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.931843 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1867170108133081088 |
|---|---|
| author | Lu, Yin |
| author_facet | Lu, Yin |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We investigated seismogenic mass failure deposits in the Dead Sea center over the last 220 kyr based on the ICDP Dead Sea Core 5017-1. We subdivide the seismogenic mass failure deposits into four basic types. (i) Seismogenic sandy turbidites; (ii) Laminae fragments-imbedded detritus layers; (iii) Slump deposits; (iv) Chaotic deposits. We measured the thickness and occurrence frequency of these seismogenic mass failure deposits. We applied XRF-data [ln(Ca/Ti)] and magnetic susceptibility to characterize these seismogenic mass failure deposits. Our Dead Sea case study provides a unique opportunity to distinguish and separate trigger and preconditioning factor(s) of subaqueous mass failure deposits. The record allows a statistical evaluation and correlation with potential preconditioning factors. We find that a variable sedimentation rate is not the preconditioning factor for mass failures under seismic shaking in the Dead Sea. Our dataset reveals that at the orbital- and millennial-scale, variable sedimentation rates are not a preconditioning factor for these mass failure deposits; (ii) at the centennial- to decadal-scale, earthquake-triggered mass failures can occur at any lake-level state; (iii) at the orbital- and millennial-scale, the mass failures are more frequent when lake-levels were high and punctuated by large-amplitude fluctuations. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_931843 |
| institution | PANGAEA |
| language | en |
| publishDate | 2021 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Features of seismogenic mass failure deposits in the Dead Sea center over the last 220 kyr based on the ICDP Dead Sea Core 5017-1 Lu, Yin chaotic deposits; Dead Sea; ICDP5017-1; mass failures; sea-level change; Seismic shaking; slump; turbidites We investigated seismogenic mass failure deposits in the Dead Sea center over the last 220 kyr based on the ICDP Dead Sea Core 5017-1. We subdivide the seismogenic mass failure deposits into four basic types. (i) Seismogenic sandy turbidites; (ii) Laminae fragments-imbedded detritus layers; (iii) Slump deposits; (iv) Chaotic deposits. We measured the thickness and occurrence frequency of these seismogenic mass failure deposits. We applied XRF-data [ln(Ca/Ti)] and magnetic susceptibility to characterize these seismogenic mass failure deposits. Our Dead Sea case study provides a unique opportunity to distinguish and separate trigger and preconditioning factor(s) of subaqueous mass failure deposits. The record allows a statistical evaluation and correlation with potential preconditioning factors. We find that a variable sedimentation rate is not the preconditioning factor for mass failures under seismic shaking in the Dead Sea. Our dataset reveals that at the orbital- and millennial-scale, variable sedimentation rates are not a preconditioning factor for these mass failure deposits; (ii) at the centennial- to decadal-scale, earthquake-triggered mass failures can occur at any lake-level state; (iii) at the orbital- and millennial-scale, the mass failures are more frequent when lake-levels were high and punctuated by large-amplitude fluctuations. |
| title | Features of seismogenic mass failure deposits in the Dead Sea center over the last 220 kyr based on the ICDP Dead Sea Core 5017-1 |
| topic | chaotic deposits; Dead Sea; ICDP5017-1; mass failures; sea-level change; Seismic shaking; slump; turbidites |
| url | https://doi.org/10.1594/PANGAEA.931843 |