Presentation is loading. Please wait.

Presentation is loading. Please wait.

PALYNOLOGY Environmental Sequence Global Climate Change Tectonism Sierran Rain Shadow Local Uplift/Subsidence VOLCANOLOGY SRP History Plume – Crust Interactions.

Published by Modified over 9 years ago

Similar presentations

Presentation on theme: "PALYNOLOGY Environmental Sequence Global Climate Change Tectonism Sierran Rain Shadow Local Uplift/Subsidence VOLCANOLOGY SRP History Plume – Crust Interactions."— Presentation transcript:

1

2 PALYNOLOGY Environmental Sequence Global Climate Change Tectonism Sierran Rain Shadow Local Uplift/Subsidence VOLCANOLOGY SRP History Plume – Crust Interactions Hotspot Dynamics HISTORY OF THE SNAKE RIVER PLAIN HOTSPOT

3 PALYNOLOGY Environmental Sequence Global Climate Change Tectonism Sierran Rain Shadow Local Uplift/Subsidence VOLCANOLOGY SRP History Plume – Crust Interactions Hotspot Dynamics HISTORY OF THE SNAKE RIVER PLAIN HOTSPOT Dated Tephra Dated Flows Uplift/Subsidence

4 PALYNOLOGY Environmental Sequence Global Climate Change Tectonism Sierran Rain Shadow Local Uplift/Subsidence VOLCANOLOGY SRP History Plume – Crust Interactions Hotspot Dynamics HISTORY OF THE SNAKE RIVER PLAIN HOTSPOT Dated Tephra Dated Flows Uplift/Subsidence Paleoelevation Interbed Ages Correlation

5 Strong influence of elevation on vegetation & palynology

6 Climatic changes (glacial/interglacial) subtle

7 Marked late-Neogene evolution of vegetation Climate = global + tectonic 4200 ft

8 Trends: late Miocene – early Pleistocene (means of dating and correlating flows) 10 m.a. 5 m.a. 0.7 m.a.

9 Composite of Bruneau and MHAB-1 cores 4000 ft

10 Tentative Chronology (based on correlation) Pleisto Pliocene Terteling Spr 5-6 m.a. Mio Dated Lava

11 Volcanic Tephra Chronology for palynology, Before Lake Idaho ~8 Ma ~11 Ma

12 Interbedded Sediments: east of Lake Idaho younger than Lake Idaho 6.25 Ma 4 Ma

13 Interbedded Sediments: cores & wells INEL (thanks to Linda Davis) Deerflat, Simplot, etc. 1.12 & 3.16 km 8.2 Ma

14 Tentative Sequence

15 Preliminary Palynological Results Tentative vegetation-climate sequenceTentative vegetation-climate sequence –Potential value of long cores –Apparent ages consistent with HOTSPOT Paleoelevation: large changesPaleoelevation: large changes –INEL-1 ~km Interbedded sediments provide:Interbedded sediments provide: –Wider coverage (not just Lake Idaho) –Tephra & flow dates for Palynology sequence

16

17 Horseshoe Bend

18 Additional INEL, Hagerman Fossil Beds and Simplot Well samples

19 Age: Nothing in “Lk Idaho” older than mid-Miocene? Elevation: big changes & high elev. flora very different

20

21 Sand Spr. 0.095 Ma

22 Snake River Plain Cross-section Homedale - Boise

23 Bruneau Fm. Surface elevation of Lake Idaho sensu lato

24

25

26

27 Miocene Riparian Vegetation

28

Download ppt "PALYNOLOGY Environmental Sequence Global Climate Change Tectonism Sierran Rain Shadow Local Uplift/Subsidence VOLCANOLOGY SRP History Plume – Crust Interactions."

Similar presentations

Welcome Integrating the Cross-cutting Big Ideas in the Earth and Space Science Domain Presenter Date Location.

Welcome Integrating the Cross-cutting Big Ideas in the Earth and Space Science Domain Presenter Date Location.
EVOLUTION OF VOLCANISM ON VENUS

EVOLUTION OF VOLCANISM ON VENUS
The first 80% of the History of Venus?. Some Geological Conclusions from Magellan Analysis -Volcanism and tectonism are the most abundant geological processes.

The first 80% of the History of Venus?. Some Geological Conclusions from Magellan Analysis -Volcanism and tectonism are the most abundant geological processes.
PLATE TECTONICS AS CONVECTION Plate tectonics is surface manifestation of convection cells in earth’s mantle. Ridges (spreading centers) mark upwelling,

PLATE TECTONICS AS CONVECTION Plate tectonics is surface manifestation of convection cells in earth’s mantle. Ridges (spreading centers) mark upwelling,
Preliminary Evaluation of a Newly Discovered Holocene Scarp on the Sawtooth Fault, Central Idaho Glenn D. Thackray, David W. Rodgers, Eric Johnson and.

Preliminary Evaluation of a Newly Discovered Holocene Scarp on the Sawtooth Fault, Central Idaho Glenn D. Thackray, David W. Rodgers, Eric Johnson and.
The Messinian Salinity Crisis Brendan Seely Ryan Shirilla.

The Messinian Salinity Crisis Brendan Seely Ryan Shirilla.
The Pliocene Bouse Formation and initiation of the modern Colorado River Jon Spencer, Arizona Geological Survey Jonathan Patchett, University of Arizona.

The Pliocene Bouse Formation and initiation of the modern Colorado River Jon Spencer, Arizona Geological Survey Jonathan Patchett, University of Arizona.
An Active River Beth Roland Eighth Grade Science Jacobs Fork Middle The Birth of a River Beth Roland Eight Grade Science Jacobs Fork Middle School.

An Active River Beth Roland Eighth Grade Science Jacobs Fork Middle The Birth of a River Beth Roland Eight Grade Science Jacobs Fork Middle School.
Introduction to stratigraphy Establishing relationships between rocks.

Introduction to stratigraphy Establishing relationships between rocks.
Chapter 6 Earth’s History

Chapter 6 Earth’s History
The Cenozoic Era Geology 103. Following the Mesozoic extinctions, – marine invertebrates diversified giving rise to the present-day familiar marine fauna.

The Cenozoic Era Geology 103. Following the Mesozoic extinctions, – marine invertebrates diversified giving rise to the present-day familiar marine fauna.
Features of the Ocean Floor

Features of the Ocean Floor
Late Pleistocene glacier advances in the Ahklun Mountains.

Late Pleistocene glacier advances in the Ahklun Mountains.
Geology Field Guide of Jemez Mountains and Capulin Volcano By Dorey Smith.

Geology Field Guide of Jemez Mountains and Capulin Volcano By Dorey Smith.
Geologic Overview of the Clackamas Basin Peter Wampler OSU.

Geologic Overview of the Clackamas Basin Peter Wampler OSU.
Field trip: This Saturday VOLUNTARY Meet here (to carpool?) and then drive to Bridger to rendezvous with Dr. Zwick at 9 AM. Bring lunch and something.

Field trip: This Saturday VOLUNTARY Meet here (to carpool?) and then drive to Bridger to rendezvous with Dr. Zwick at 9 AM. Bring lunch and something.
An OSL-dated palaeoenvironmental record from a pan-lunette complex and the linear dunes at Witpan, southwestern Kalahari Matt Telfer Prof. Dave Thomas.

An OSL-dated palaeoenvironmental record from a pan-lunette complex and the linear dunes at Witpan, southwestern Kalahari Matt Telfer Prof. Dave Thomas.
CEE 437 Lecture 1 October 1, 2002 Thomas Doe. Outline Course Introduction Geology and Engineers Brief History of Geology Global Structure Plate Tectonics.

CEE 437 Lecture 1 October 1, 2002 Thomas Doe. Outline Course Introduction Geology and Engineers Brief History of Geology Global Structure Plate Tectonics.
b. a. Moons of Jupiter – total of 63 confirmed! Inner moons closer to Jupiter than Io.

b. a. Moons of Jupiter – total of 63 confirmed! Inner moons closer to Jupiter than Io.
Yellowstone - Snake River Plain. Geography -Snake River Valley is comprised of two sections. The Western is a fault bounded graben while the Eastern section.

Yellowstone - Snake River Plain. Geography -Snake River Valley is comprised of two sections. The Western is a fault bounded graben while the Eastern section.

Similar presentations

Ads by Google