Persistent Identifier
|
doi:10.18710/BYZIZX |
Publication Date
|
2019-02-28 |
Title
| Replication Data for: Cenozoic stages of forearc evolution following the accretion of a sliver from the Late Cretaceous-Caribbean Large Igneous Province (CLIP): SW Ecuador-NW Peru |
Author
| Aizprua, Carlos (NTNU – Norwegian University of Science and Technology) - ORCID: 0000-0003-1661-5352
Witt, Cesar (University of Lille)
Johansen, Ståle (NTNU – Norwegian University of Science and Technology)
Barba, Diego (Petroamazonas) |
Point of Contact
|
Use email button above to contact.
Carlos Aizprua Luna (Equinor) |
Description
| The dataset include 2D seismic profiles and well log data from the Gulf of Guayaquil-Tumbes basin, SW Ecuador-NW Peru, used in the article: Cenozoic stages of forearc evolution following the accretion of a sliver from the Late Cretaceous-Caribbean Large Igneous Province (CLIP): SW Ecuador-NW Peru.
The SW Ecuador-NW Peru forearc region is the southernmost location, where the Caribbean Large Igneous Province (CLIP) interacted with the South American margin since the Late Cretaceous. The accretion of the CLIP to the margin led to the entrapment of the North Andean crustal Sliver, conforming the underlying basement of the forearc region in Ecuador, whereas in NW Peru, forearc depocenters involve rocks of continental affinity. Many existing tectonic reconstructions have treated these two areas independently, largely based on their crustal affinities. In contrast, this study integrates previous studies into an analysis of unpublished seismic profiles, potential field data, outcrop stratigraphy, and recent studies dealing with the dynamics of allochthonous terrane accretion along continental margins. Our integrated approach shows that SW Ecuador was dominated by a Late Cretaceous deforming outer wedge, which may have constituted a remnant of a northeast or northwest-dipping obliquely obducted oceanic block at the edge of the CLIP. This tectonic phase was governed by plate instability, affecting NW Peru and SW Ecuador, followed by re-establishment of the margin by early Eocene. The resulting margin configuration and the spatial distribution of the different tectonic elements seems to have played a key role on further Cenozoic development of the forearc region. The model presented in this study proposes that the accretion of buoyant oceanic terranes may have had a profound impact on the early margin configuration of SW Ecuador and NW Peru and led to the development of localized but genetically related forearc depocenters. (2019-01-31) |
Subject
| Earth and Environmental Sciences |
Keyword
| North Andean Sliver
Forearc
Caribbean Large Igneous Province |
Related Publication
| Aizprua, C., Witt, C., Johansen, S. E., & Barba, D. (2019). Cenozoic stages of forearc evolution following the accretion of a sliver from the Late Cretaceous-Caribbean large igneous province: SW Ecuador-NW Peru. Tectonics, 38, 1441– 1465. https://doi.org/10.1029/2018TC005235 doi: 10.1029/2018TC005235 https://doi.org/10.1029/2018TC005235 |
Language
| English |
Producer
| NTNU – Norwegian University of Science and Technology (NTNU) https://www.ntnu.edu/ |
Contributor
| Data Collector : Aizprua Luna, Carlos |
Funding Information
| Statoil AKADEMIA Agreement |
Distributor
| NTNU – Norwegian University of Science and Technology (NTNU – Norwegian University of Science and Technology) (NTNU) https://dataverse.no/dataverse/ntnu |
Depositor
| Aizprua, Carlos |
Deposit Date
| 2019-01-31 |
Time Period
| Start Date: 1989-01-01 ; End Date: 2000-12-31 |
Data Type
| 2D Seismic data; Well log data |
Origin of Historical Sources
| Data provided by PETROAMAZONAS (National oil&gas company in Ecuador) |