| DOI: | 10.1016/j.gloplacha.2013.10.007
|
| 论文题名: | Paleosol architecture of a late Quaternary basin-margin sequence and its implications for high-resolution, non-marine sequence stratigraphy |
| 作者: | Amorosi A.; Bruno L.; Rossi V.; Severi P.; Hajdas I.
|
| ISSN: | 0921-8475
|
| 出版年: | 2014
|
| 卷: | 112 | | 起始页码: | 12
|
| 结束页码: | 25
|
| 语种: | 英语
|
| 英文关键词: | Alluvial architecture
; Holocene
; Interfluve
; Late Pleistocene
; Paleosol
; Sequence stratigraphy
|
| Scopus关键词: | Glacial geology
; Isotopes
; Sea level
; Soils
; Sols
; Alluvial architecture
; Holocenes
; Interfluve
; Late Pleistocene
; Paleosol
; Sequence stratigraphy
; Stratigraphy
; correlation
; depositional environment
; Last Glacial Maximum
; marine ecosystem
; paleosol
; Quaternary
; sequence stratigraphy
; soil ecosystem
; timescale
|
| 英文摘要: | Paleosol stratigraphy, a technique commonly applied in basin-margin settings to depict cyclic alluvial architecture on time scales of 10-100. ky, can be consistent with regional accommodation trends at even higher temporal resolution (1-10. ky), having strong implications for the sequence stratigraphy of late Quaternary, non-marine deposits. Three closely-spaced late Pleistocene paleosols (P1-P3), dating back approximately to 42-39, 35-31, and 29-26. cal. kyr BP, respectively, form prominent stratigraphic markers across a lithologically homogeneous interfluve succession in the subsurface of Bologna, close to the Apenninic foothills. These paleosols are weakly developed (Inceptisols) and can be tracked continuously for 6. km across the triangle-shaped interchannel zone between two gravel/sand-filled channel systems (Reno and Savena rivers). In particular, the thickest paleosol (P3) is a distinctive stiff horizon that can be traced into laterally extensive, erosional-based fluvial bodies. We infer the correlation between (P3) soil development (and channel downcutting) and the final stage of the stepwise Late Pleistocene sea-level fall that culminated at the marine isotope stage 3/2 transition around 29. cal. kyr BP (low accommodation systems tract). A fourth laterally extensive Inceptisol, encompassing the Pleistocene-Holocene boundary (PH), represents the major phase of soil development since the Last Glacial Maximum and is inferred to be related to channel entrenchment at the onset of the Younger Dryas. With the exception of the Iron Age-Roman paleosol, which reflects a predominantly anthropogenic control, the Holocene paleosols are laterally discontinuous and invariably more immature (Entisols) than their Pleistocene counterparts. This trend of decreasing paleosol development (and correlatability) upsection is interpreted to reflect increasing (transgressive-equivalent) accommodation during sea-level rise, thus confirming the possible extension of models used to interpret the ancient rock record to short-term depositional cycles. © 2013 Elsevier B.V. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84888080159&doi=10.1016%2fj.gloplacha.2013.10.007&partnerID=40&md5=0afec99a4ede1d9bf72b4eddcf055e28
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/11381
|
| Appears in Collections: | 全球变化的国际研究计划
|
|
There are no files associated with this item.
|
|
作者单位: | Dipartimento di Scienze Biologiche, Geologiche e Ambientali, University of Bologna, Via Zamboni 67, 40127 Bologna, Italy
|
| Recommended Citation: | |
Amorosi A.,Bruno L.,Rossi V.,et al. Paleosol architecture of a late Quaternary basin-margin sequence and its implications for high-resolution, non-marine sequence stratigraphy[J],2014-01-01,112.
|
|
|