Events Archive

Environmental Geology & Geochemistry Seminar - Bonnie Chang
Thu, Mar 21, 2024, 12:30 pm1:20 pm

Host: Prof. Bess Ward

Bring your lunch, snacks served

Location
Guyot Hall 220
Speaker
Environmental Geology & Geochemistry Seminar - Andrew Babbin
Thu, Feb 29, 2024, 12:30 pm1:20 pm

The ocean interior is commonly considered a proverbial desert devoid of much biological activity and with low nutrient supply to support whatever microbial life does exist. Yet, the oceans are full of microorganisms, nearly a billion cells per liter, revealing a conundrum of how the oceans maintain this wealth of biota despite the seeming lack…

Location
Guyot Hall 220
Speaker
Environmental Geology & Geochemistry Seminar - Brian Huber
Thu, Feb 22, 2024, 12:30 pm1:20 pm

Cretaceous marine sediments from southern high latitudes provide valuable archives of palaeotemperature change with considerable spatial coverage and good temporal control. Obtaining these paleotemperature estimates is especially important because of the greater sensitivity of high latitudes to changes in global climate. I will present a new…

Location
Guyot Hall 220
Speaker
Environmental Geology & Geochemistry Seminar - Darcy McRose
Thu, Nov 30, 2023, 12:30 pm1:30 pm

Microbes exert enormous influence over systems many times their size – supporting plant growth and contributing to the movement of nutrients through the Earth system. However, microbial nutrient transformations in complex environments like soils have been notoriously hard to study in a mechanistic way; leaving us with a limited understanding of…

Location
Guyot 220
Speaker
Environmental Geology & Geochemistry Seminar - Mebrahtu Weldeghebriel
Thu, Nov 9, 2023, 12:30 pm1:30 pm

Reconstructing ocean chemistry and understanding the long-term controls of its temporal variations provide constraints on the evolution of the global carbon cycle and the sources and sinks of carbon dioxide in the hydrosphere and atmosphere. Recent advances in laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) now allow…

Location
Guyot 220
Speaker
Environmental Geology & Geochemistry Seminar - Curtis Deutsch
Thu, Oct 26, 2023, 12:30 pm1:30 pm
Location
Guyot 220
Speaker
Environmental Geology & Geochemistry Seminar - Tripti Bhattacharya
Thu, May 11, 2023, 12:30 pm1:30 pm

Models and theoretical predictions suggest that subtropical continents will dry as a result of anthropogenic warming, with impacts on water resources and ecosystems. However, geologic evidence from past warm periods like the Pliocene document wetter conditions across the subtropics, at odds with theoretical expectations. In this talk, I show…

Location
Guyot 220
Speaker
Environmental Geology & Geochemistry Seminar - Yvonne Sawall
Thu, Mar 23, 2023, 12:30 pm1:20 pm

Ocean warming is considered the most severe threat to coral reefs. Increasing duration and frequency of marine heat waves over the last few decades have led to large-scale coral bleaching and death, and hence the loss of diverse and productive coral reefs around the world. However, not all corals are equally susceptible to heat stress and it is…

Location
Guyot Hall 220
Speaker
Environmental Geology & Geochemistry Seminar - Eric Borguet
Thu, Feb 23, 2023, 12:30 pm1:30 pm

Interfacial water structure is key to diverse chemical and physical processes, including many of environmental and geochemical relevance.  It can be probed by vibrational sum-frequency generation (vSFG) spectroscopy as well as ultrafast time-resolved vSFG.  However, a more complete microscopic understanding requires additional…

Location
Guyot Hall 220
Speaker
Environmental Geology & Geochemistry Seminar - Herbert
Thu, Nov 17, 2022, 12:30 pm1:30 pm

Abstract

Metals such as Fe, Mn, Co, and Cu are critical micronutrients for life, yet exist at trace concentrations in modern, oxygenated seawater. Low availability of these trace metals in the illuminated surface ocean can limit the growth of phytoplankton, which serve as the base of the marine food chain. As a result…

Speaker
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