Lara F. Pérez

Geological Survey of Denmark and Greenland

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Yasmina M. Martos

Goddard Space Flight Center

Marga García

Instituto Español de Oceanografía

Trevor Williams

Texas A&M University

Sidney R. Hemming

Lamont-Doherty Earth Observatory

Lisa Tauxe

Scripps Institution of Oceanography

Maureen E. Raymo

Lamont-Doherty Earth Observatory

Stefanie Brachfeld

Montclair State University

Osamu Seki

Hokkaido University

Michael E Weber

University of Bonn

Brendan T. Reilly

Lamont-Doherty Earth Observatory

Cooperative Institutions

Texas A&M University

University of Plymouth

International Ocean Discovery Program

Discovery Place

Geological Survey of Western Australia

Sam Houston State University

Tongji University

United States Office of Personnel Management

Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung

Instituto Andaluz de Ciencias de la Tierra

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Cenozoic history of Antarctic glaciation and climate from onshore and offshore studies

Elsevier eBooks (2021)

Robert M. McKay Carlota Escutia Laura De Santis Federica Donda Bella Duncan

Antarctic ice sheet

Scientific drilling

Continental Margin

10.1016/b978-0-12-819109-5.00008-6

Cite

Citations (15)

New Magnetostratigraphic Insights From Iceberg Alley on the Rhythms of Antarctic Climate During the Plio‐Pleistocene

Paleoceanography and Paleoclimatology (2021)

Brendan T. Reilly Lisa Tauxe Stefanie Brachfeld Maureen E. Raymo Ian Bailey

Abstract International Ocean Discovery Program (IODP) Expedition 382 in the Scotia Sea’s Iceberg Alley recovered among the most continuous and highest resolution stratigraphic records in the Southern Ocean near Antarctica spanning the last 3.3 Myr. Sites drilled in Dove Basin (U1536/U1537) have well‐resolved magnetostratigraphy and a strong imprint of orbital forcing in their lithostratigraphy. All magnetic reversals of the last 3.3 Myr are identified, providing a robust age model independent of orbital tuning. During the Pleistocene, alternation of terrigenous versus diatomaceous facies shows power in the eccentricity and obliquity frequencies comparable to the amplitude modulation of benthic δ 18 O records. This suggests that variations in Dove Basin lithostratigraphy during the Pleistocene reflect a similar history as globally integrated ice volume at these frequencies. However, power in the precession frequencies over the entire ∼3.3 Myr record does not match the amplitude modulation of benthic δ 18 O records, suggesting Dove Basin contains a unique record at these frequencies. Comparing the position of magnetic reversals relative to local facies changes in Dove Basin and the same magnetic reversals relative to benthic δ 18 O at North Atlantic IODP Site U1308, we demonstrate Dove Basin facies change at different times than benthic δ 18 O during intervals between ∼3 and 1 Ma. These differences are consistent with precession phase shifts and suggest climate signals with a Southern Hemisphere summer insolation phase were recorded around Antarctica. If Dove Basin lithology reflects local Antarctic ice volume changes, these signals could represent ice sheet precession‐paced variations not captured in benthic δ 18 O during the 41‐kyr world.

Plio-Pleistocene

Milankovitch cycles

Lithostratigraphy

Early Pleistocene

10.1029/2020pa003994

Cite

Citations (18)

Rapid denudation of West Antarctica during the Early-Middle Miocene

James Marschalek L. Zurli Tina van de Flierdt F. Talarico A. Carter

Denudation

Source

Cite

Citations (0)

Asynchronous ice-sheet development along the central East Greenland margin: a GLANAM project contribution

Geological Survey of Denmark and Greenland Bulletin (2017)

Lara F. Pérez Tøve Nielsen

The sedimentary record of the glaciated margins of the North Atlantic holds evidence of past ice-sheet activity, and reflects spatial and temporal variations in the ice–ocean–climate interaction as well as the influence of tectonic processes. Furthermore, the record of cross-shelf ice sheets provides a direct link between the continental ice cover and the deep ocean, a relevant issue in the context of climate research.

Greenland ice sheet

10.34194/geusb.v38.4416

Cite

Citations (2)

Antarctic environmental change and ice sheet evolution through the Miocene to Pliocene – a perspective from the Ross Sea and George V to Wilkes Land Coasts

Elsevier eBooks (2021)

R. H. Levy Aisling M. Dolan Carlota Escutia Edward Gasson Robert M. McKay

Neogene

Antarctic ice sheet

Global cooling

Holocene climatic optimum

Ice-sheet model

Paleoclimatology

10.1016/b978-0-12-819109-5.00014-1

Cite

Citations (20)

Magmatism, structure and age of Dove Basin (Antarctica): A key to understanding South Scotia Arc development

Global and Planetary Change (2014)

Jesús Galindo‐Zaldívar Encarnación Puga Fernando Bohoyo Javier González Andrés Maldonado

Seamount

Accretionary wedge

10.1016/j.gloplacha.2014.07.021

Cite

Citations (26)

IODP Expedition 382 Micropaleontology

Zenodo (CERN European Organization for Nuclear Research) (2021)

Michael E Weber Maureen E. Raymo Victoria L. Peck Trevor Williams Linda Armbrecht

Paleontological data were collected using microscopes and recorded in the JRSO description software. All data for a species group (e.g., diatoms or nannofossils) were collected in a Microsoft Excel worksheet by hole. A zip file of the entire expedition's observations is also available.

Micropaleontology

10.5281/zenodo.8256614

Cite

Citations (0)

IODP Expedition 382 Alkalinity and pH

Zenodo (CERN European Organization for Nuclear Research) (2021)

Michael E Weber Maureen E. Raymo Victoria L. Peck Trevor Williams Linda Armbrecht

Alkalinity was determined by Gran titration with an autotitrator (Metrohm 794 basic Titrino) using 0.1 M HCl at 20 degrees C. Report includes alkalinity, correction factor (if applicable), and pH.

Alkalinity

10.5281/zenodo.8256533

Cite

Citations (0)

NorthGreen: unlocking records from sea to land in Northeast Greenland

Scientific Drilling (2024)

Lara F. Pérez Paul Cornils Knutz John R. Hopper Marit‐Solveig Seidenkrantz Matt O’Regan

Abstract. The increasing anthropogenic CO2 forcing of the climate system calls for a better understanding of how polar ice sheets may respond to accelerating global warming. The sensitivity of the Greenland ice sheet to polar amplification, changes in ocean heat transport, and deteriorating perennial sea ice conditions makes the Northeast Greenland margin a pertinent location with respect to understanding the impact of climate change on ice sheet instability and associated sea level rise. Throughout the Cenozoic, ocean heat fluxes toward and along Northeast Greenland have been controlled by water mass exchanges between the Arctic and Atlantic oceans. A key element here is the current flow through oceanic gateways, notably the Fram Strait and the Greenland–Scotland Ridge. To gain a long-term (million-year) perspective of ice sheet variability in this region, it is essential to understand the broader context of ice–ocean–tectonic interactions. Coupling between the ice sheet, the subsurface, the ocean, and sea ice are readily observable today in Northeast Greenland, but geological records to illuminate long-term trends and their interplay with other parts of the global climate system are lacking. Consequently, the NorthGreen workshop was organized by the Geological Survey of Denmark and Greenland in collaboration with Aarhus (Denmark) and Stockholm (Sweden) universities in November 2022 to develop mission-specific platform (MSP) proposals for drilling the Northeast Greenland margin under the umbrella of the MagellanPlus Workshop Series Programme of the European Consortium for Ocean Research Drilling (ECORD). Seventy-one participants representing a broad scientific community discussed key scientific questions and primary targets that could be addressed through scientific drilling in Northeast Greenland. Three pre-proposals were initiated during the workshop targeting Morris Jesup Rise, the Northeast Greenland continental shelf, and Denmark Strait.

10.5194/sd-33-33-2024

Cite

Citations (0)

Supplemental Material: Early and middle Miocene ice sheet dynamics in the Ross Sea: Results from integrated core-log-seismic interpretation

Lara F. Pérez

Additional information regarding methods (Reflection seismic processing, Drill-site measurements, Core-log-seismic correlations, Spatial Velocity calculations, and Reflection Tomography model) and regional stratigraphy descriptions, as well as detailed considerations regarding the opal distribution and depth.

Reflection

Drill hole

Ice core

10.1130/gsab.s.14356205.v1

Cite

Citations (0)