Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jsames.2014.06.001 |
Denudation history and landscape evolution of the northern East-Brazilian continental margin from apatite fission-track thermochronology | |
Jelinek, A. R.1; Chemale, E., Jr.2; van der Beek, P. A.3; Guadagnin, F.4; Cupertino, J. A.5; Viana, A.5 | |
通讯作者 | Jelinek, A. R. |
来源期刊 | JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
![]() |
ISSN | 0895-9811 |
出版年 | 2014 |
卷号 | 54页码:158-181 |
英文摘要 | We reconstruct the history of denudation and landscape evolution of the northern East- Brazilian continental margin using apatite fission-track thermochronology and thermal history modeling. This part of the Brazilian Atlantic margin is morphologically characterized by inland and coastal plateaus surrounding a wide low-lying inland region, the Sertaneja Depression. The apatite fission track ages and mean track lengths vary from 39 +/- 4 to 350 +/- 57 Ma and from 10.0 +/- 0.3 to 14.2 +/- 0.2 mu m, respectively, implying a protracted history of spatially variable denudation since the Permian at relatively low rates (<50 m My(-1)). The Sertaneja Depression and inland plateaus record Permian-Early Jurassic (300-180 Ma) denudation that precedes rifting of the margin by > 60 Myrs. In contrast, the coastal regions record up to 2.5 km of Late Jurassic-Early Cretaceous (150-120 Ma) denudation, coeval with rifting of the margin. The samples from elevated coastal regions, the Borborema Plateau and the Mantiqueira Range, record cooling from temperatures above 120 degrees C since the Late Cretaceous extending to the Cenozoic. We interpret this denudation as related to post-rift uplift of these parts of the margin, possibly resulting from compressional stresses transmitted from the Andes and/or magmatism at that time. Several samples from these areas also record accelerated Neogene (<30 Ma) cooling, which may record landscape response to a change from a tropical to a more erosive semi-arid climate during this time. The inferred denudation history is consistent with the offshore sedimentary record, but not with evolutionary scenarios inferred from the recognition of "planation surfaces" on the margin. The denudation history of the northeastern Brazilian margin implies a control of pre-, syn- and post-rift tectonic and climatic events on landscape evolution. (C) 2014 Elsevier Ltd. All rights reserved. |
英文关键词 | Passive continental margin Denudation NE-Brazil Apatite fission-track thermochronology |
类型 | Article |
语种 | 英语 |
国家 | Brazil ; France |
收录类别 | SCI-E |
WOS记录号 | WOS:000340863900011 |
WOS关键词 | TUCANO-JATOBA RIFT ; DRAKENSBERG ESCARPMENT ; BORBOREMA PROVINCE ; SEISMIC-REFLECTION ; ANNEALING KINETICS ; FLEXURAL ISOSTASY ; SOUTHEAST BRAZIL ; TECTONIC CONTROL ; PASSIVE MARGINS ; MANTLE PLUMES |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
来源机构 | French National Research Institute for Sustainable Development |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/183669 |
作者单位 | 1.Univ Fed Rio Grande do Sul, Inst Geociencias, BR-91501970 Porto Alegre, RS, Brazil; 2.Univ Brasilia, Inst Geociencias, Brasilia, DF, Brazil; 3.Univ Grenoble 1, Inst Sci Terre, Grenoble, France; 4.Univ Fed Pampa, Dept Geol, Cacapava Do Sul, Brazil; 5.Petrobras SA, Rio De Janeiro, Brazil |
推荐引用方式 GB/T 7714 | Jelinek, A. R.,Chemale, E., Jr.,van der Beek, P. A.,et al. Denudation history and landscape evolution of the northern East-Brazilian continental margin from apatite fission-track thermochronology[J]. French National Research Institute for Sustainable Development,2014,54:158-181. |
APA | Jelinek, A. R.,Chemale, E., Jr.,van der Beek, P. A.,Guadagnin, F.,Cupertino, J. A.,&Viana, A..(2014).Denudation history and landscape evolution of the northern East-Brazilian continental margin from apatite fission-track thermochronology.JOURNAL OF SOUTH AMERICAN EARTH SCIENCES,54,158-181. |
MLA | Jelinek, A. R.,et al."Denudation history and landscape evolution of the northern East-Brazilian continental margin from apatite fission-track thermochronology".JOURNAL OF SOUTH AMERICAN EARTH SCIENCES 54(2014):158-181. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。