EHaP Seminars

These seminars hosted jointly by OEB and EPS bring together researchers from a variety of disciplines that are interested in the relationship between Earth’s chemical evolution and the history of life on it.
2020 May 04

EHaP Seminar Series

3:00pm

Location: 

MCZ 101A (26 Oxford St)
Blaire Van Valkenburgh
Professor, Department of Ecology and Evolutionary Biology
UCLA

 

The Earth History and Paleobiology (EHaP) Seminar Series is jointly hosted by OEB and EPS.

2020 Apr 20

EHaP Seminar Series

3:00pm

Location: 

MCZ 101A (26 Oxford St)
Shuhai Xiao
Professor of Geobiology, Department of Geosciences
Virgina Tech
 
 
The Earth History and Paleobiology (EHaP) Seminar Series is jointly hosted by OEB and EPS.
2020 Apr 06

EHaP Seminar Series

3:00pm

Location: 

MCZ 101A (26 Oxford St)
Alycia Stigall
Professor, Department of Geologicla Sciences
Ohio University
 
The Earth History and Paleobiology (EHaP) Seminar Series is jointly hosted by OEB and EPS.
2020 Mar 23

EHaP Seminar Series

3:00pm

Location: 

MCZ 101A (26 Oxford St)
Gabriela Mangano
Professor, Department of Geological Sciences
University of Saskatchewan
 
The Earth History and Paleobiology (EHaP) Seminar Series is jointly hosted by OEB and EPS.
2020 Mar 09

EHaP Seminar Series

3:00pm

Location: 

MCZ 101A (26 Oxford St)
MIchael Coates
Profeesor, Department of Organismal Biology and Anatomy
University of Chicago
 
The Earth History and Paleobiology (EHaP) Seminar Series is jointly hosted by OEB and EPS.
2020 Feb 24

EHaP Seminar Series

3:00pm

Location: 

Haller Hall (Geological Museum 102)
Hans Sues
Chair of Paleobiology, Senior Research Geologist and Curator of Vertebrate Paleontology
Smithsonian National Museum of Naturall History
 
 
The Earth History and Paleobiology (EHaP) Seminar Series is jointly hosted by OEB and EPS.
2020 Feb 10

EHaP Seminar Series

3:00pm

Location: 

Haller Hall (Geological Museum 102)
Caroline Strömberg
Estella B. Leopold Professor of Biology & Curator of Paleobotany
Adjunct Professor, Earth and Space Sciences
University of Washington
 
 

The Earth History and Paleobiology (EHaP) Seminar Series is jointly hosted by OEB and EPS.

2019 Oct 29

EHAP Seminar

1:00pm

Location: 

Geology Museum 102 (Haller Hall)

Peter Crockford
Agouron Postdoctoral Fellow
Weizmann Institute of Science/Princeton University

The geologic history of Earth's biosphere

Modern primary producers perform oxygenic photosynthesis that provides O2 to the atmosphere and fixes carbon to fuel initial heterotrophic consumption in the global biosphere. Although atmospheric O2 levels over the Proterozoic are vigorously debated, multiple lines of evidence point to lower levels compared to the modern. In such a low-oxygen world...

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2019 Nov 12

EHAP Seminar

1:00pm

Location: 

Geology Museum 102 (Haller Hall)

Tristan Horner
Assistant Scientist
Marine Chemistry & Geochemistry
Woods Hole Oceanographic Institution

Isotopic insights into the drivers of marine barium cycling

Barium is widely used as an oceanographic proxy for deep ocean nutrients, ocean circulation, alkalinity, carbon export, surface runoff, and historical upwelling intensity. While this breadth perhaps reflects the unparalleled utility of barium-based proxies to reconstruct all aspects of ocean chemistry, it is also a sign of potentially misidentified driving processes. Development of the barium isotope ‘toolbox’ now permits testing several of the proposed drivers. I will apply this toolbox for precisely this purpose, and will present results spanning several scales: from the basin-scale processes sustaining oceanographic barium distributions, to the micro-scale mechanisms of barium isotope fractionation during mineral precipitation. Emerging results indicate that the mineral barite is the critical driver of marine barium cycling, a result that I will explore in the context of using barium-based proxies for reconstructing ocean chemistry.

 

The Earth History and Paleobiology (EHAP) Seminar Series is jointly hosted by OEB and EPS.

2019 Oct 15

EHAP Seminar

1:00pm

Location: 

Geology Museum 102 (Haller Hall)

Emma Kast
Graduate Student -- Sigman Lab

Department of Geosciences
Princeton University

Nitrogen isotope evidence for expanded ocean suboxia in the early Cenozoic

The million-year variability of the marine nitrogen cycle is poorly known. Between 65 and 57 million years ago (Ma), the 15N/14N (δ15N) of foraminifera shell-bound organic matter from three sediment cores...

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2019 Oct 01

EHAP Seminar

1:00pm

Location: 

Geology Museum 102 (Haller Hall)

Tanja Bosak
Associate Professor
Chair of the Program in Geology, Geochemistry & Geobiology
MIT

Reconstructing the record of oxygenic photosynthesis on the Early Earth

The evolution of Cyanobacteria, photosynthetic microbes that split water and produce molecular oxygen, preceded the greatest biogeochemical transition that befell Earth - the addition of molecular oxygen to...

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2019 Sep 17

EHAP Seminar

1:00pm

Location: 

Geology Museum 102 (Haller Hall)

Miachel Caldwell
Professor, Dept of Biobiogical Sciences and Earth and Atmospheric Sciences
University of Alberta, Edmonton

The origin of snakes: morphology and the fossil record

The origin of snakes from within squamate reptiles is an excellent example of a major evolutionary transition; however, investigating the origins of a major clade, such as snakes, is problematic for the simple reason that the processes leading to macroevolutionary change result in significant morphological differences between the studied...

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2019 May 02

Geobiology Seminar

2:00pm

Location: 

Haller Hall (Geological Museum 102)

Melanie Hopkins
Assistant Curator, AMNH, Invertebrate Paleontology, Division of Paleontology 
Assistant Professor, Richard Gilder Graduate School... Read more about Geobiology Seminar

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