Quaternary shorelines in southern Peru: A record of global sea-level fluctuations and tectonic uplift in Chala Bay

Goy, José Luis; Macharé, José; Ortlieb, Luc; Zazo, Caridad

doi:10.1016/1040-6182(92)90039-5

Cited by 32 publications

(24 citation statements)

References 18 publications

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“…1; Broggi, 1946;Rüegg, 1956Rüegg, , 1962Hsu, 1988aHsu, ,b, 1992Hsu et al, 1989;Ortlieb and Macharé, 1990;Macharé and Ortlieb, 1992). However, due to the small number of shells in the deposits accurate age determinations were insufficient to propose robust conclusions concerning vertical rock-uplift rates, as discussed in Goy et al (1992).…”

Section: Introductionmentioning

confidence: 93%

“…In forearc basins, sequences of marine terraces preserve cumulative records of eustatic fluctuations and tectonic histories of coastal forearcs (Radtke, 1987;Muhs et al, 1990;Goy et al, 1992;Hsu, 1992;Leonard and Wehmiller, 1992;Macharé and Ortlieb, 1992;Ota et al, 1995;Ortlieb et al, 1996a;Cantalamessa and Di Celma, 2004;Marquardt et al, 2004;Pedoja et al, 2006a,b;Saillard et al, 2009). As the present day sea-level is one of the highest levels recorded for Quaternary time span, every emerged marine terrace is preserved by coastal uplift.…”

Section: Introductionmentioning

confidence: 95%

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Andean coastal uplift and active tectonics in southern Peru: 10Be surface exposure dating of differentially uplifted marine terrace sequences (San Juan de Marcona, ~15.4°S)

et al. 2011

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Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 95%

Andean coastal uplift and active tectonics in southern Peru: 10Be surface exposure dating of differentially uplifted marine terrace sequences (San Juan de Marcona, ~15.4°S)

et al. 2011

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“…Likewise, Chala bay in Peru is imprinted by a sequence of 27 marine terraces (e.g. Gabert et al, 1970;Goy et al, 1992;Zazo, 1999;Regard et al, 2010) with an uplift rate of 0.54 ± 0.03 mm/yr. On the other hand, fast uplifting areas do not necessarily include many levels.…”

Section: State Of the Artmentioning

confidence: 99%

Coastal staircase sequences reflecting sea-level oscillations and tectonic uplift during the Quaternary and Neogene

Pedoja

Husson

Johnson

et al. 2014

Earth-Science Reviews

167

195

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This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. Many coasts feature sequences of Quaternary and Neogene shorelines that are shaped by a combination of sealevel oscillations and tectonics. We compiled a global synthesis of sea-level changes for the following highstands: MIS 1, MIS 3, MIS 5e and MIS 11. Also, we date the apparent onset of sequences of paleoshorelines either from published data or tentatively extrapolating an age for the uppermost, purported oldest shoreline in each sequence. Including the most documented MIS 5e benchmark, we identify 926 sequences out of which 185 also feature Holocene shorelines. Six areas are identified where elevations of the MIS 3 shorelines are known, and 31 feature elevation data for MIS 11 shorelines. Genetic relationships to regional geodynamics are further explored based on the elevations of the MIS 5e benchmark. Mean apparent uplift rates range from 0.01 ± 0.01 mm/yr (hotspots) to 1.47 ± 0.08 mm/yr (continental collision). Passive margins appear as ubiquitously uplifting, while tectonic segmentation is more important on active margins. From the literature and our extrapolations, we infer ages for the onset of formation for~180 coastal sequences. Sea level fingerprinting on coastal sequences started at least during mid Miocene and locally as early as Eocene. Whether due to the changes in the bulk volume of seawater or to the temporal variations in the shape of ocean basins, estimates of eustasy fail to explain the magnitude of the apparent sea level drop. Thus, vertical ground motion is invoked, and we interpret the longlasting development of those paleoshore sequences as the imprint of glacial cycles on globally uplifted margins in response to continental compression. The geomorphological expression of the sequences matches the amplitude and frequency of glacial cyclicity. From middle Pleistocene to present-day, moderately fast (100,000 yrs) oscillating sea levels favor the development of well identified strandlines that are distinct from one another. Pliocene and Lower Pleistocene strandlines associated with faster cyclicity (40,000 yrs) are more compact and easily merge into rasas, whereas older Cenozoic low-frequency eustatic changes generally led to widespread flat-lying coastal plains.

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“…Most of the uplift must have been achieved at the end of the Pliocene era, as indicated by a basalt flow we encountered at less than 250 m amsl near the bottom of the Ocoña valley, indicating that almost all the incision currently observed had already occurred; it has been dated some kilometres upstream, similarly near the valley bottom at 2.0 to 2.3 Ma (Schildgen et al, 2009; 49 50 51 52 Thouret et al, 2007). Despite this, the coast presents many sequences of marine terraces and beach ridges, attesting to Quaternary uplift (e.g., Darwin, 1846;Domeyko, 1848;Gonzalez et al, 2003;Goy et al, 1992;Hartley and Jolley, 1995;Hsu et al, 1989;Machare and Ortlieb, 1992;Marquardt et al, 2004;Ortlieb et al, 1996a;Ortlieb et al, 1996b;Ota et al, 1995;Paskoff, 1977;Quezada et al, 2007;Saillard et al, 2009). Nevertheless, marine terrace sequences are not continuous (cf.…”

Section: Introductionmentioning

confidence: 99%

“…It differs from a marine terrace as its slope and relief are too high to constitute a simple terrace. However, it is sometimes laterally connected to marine terrace sequences like in Chala (Peru, Goy et al, 1992;Saillard, 2008) (Figure 2A). Similar features have been described along the northern Spanish coast where it could be 1-2 Ma-old (Alvarez-Marron et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Renewed uplift of the Central Andes Forearc revealed by coastal evolution during the Quaternary

Regard

Saillard

Martinod

et al. 2010

Earth and Planetary Science Letters

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Most of the Pacific coast of the Central Andes, between 15°S and 30°S, displays a wide (a couple of kilometres) planar feature, gently dipping oceanwards and backed by a cliff. This morphology, usually of marine orgin, is called rasa, and argues for a recent and spatially continuous uplift of the margin over the 1,500-km-long coastal region we describe. The cliff foot is found at a similar elevation (~110 m amsl) all over the studied area, with the exception of peninsulas such as the Mejillones Peninsula. The compilation of published chronological data and the extrapolation of re-appraised uplift rates provide evidence for a common cliff foot age of around 400 ka (i.e., Marine Isotopic Stage MIS 11). This, together with other geological constraints, indicates a Quaternary renewal of uplift in the Central Andes forearc after a late Pliocene quiescence or subsidence.

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Quaternary shorelines in southern Peru: A record of global sea-level fluctuations and tectonic uplift in Chala Bay

Cited by 32 publications

References 18 publications

Andean coastal uplift and active tectonics in southern Peru: 10Be surface exposure dating of differentially uplifted marine terrace sequences (San Juan de Marcona, ~15.4°S)

Andean coastal uplift and active tectonics in southern Peru: 10Be surface exposure dating of differentially uplifted marine terrace sequences (San Juan de Marcona, ~15.4°S)

Coastal staircase sequences reflecting sea-level oscillations and tectonic uplift during the Quaternary and Neogene

Renewed uplift of the Central Andes Forearc revealed by coastal evolution during the Quaternary

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