Shale Island Exploration of Shale Island. Shale Island Shale Island is but a small outcrop of shale located in southern Monterey Bay, California in a.

Slides:

Advertisements

Similar presentations

Water source Water volume, in cubic miles Percent of total water Oceans317,000, % Icecaps, Glaciers7,000, % Ground water2,000, %

Advertisements

Reading Material (see website for course) “Ocean Basins”, from “Oceanography” M.G. Gross, Prentice-Hall.

Part 1.1 Petroleum Geology. Objectives After reading the chapter and reviewing the materials presented the students will be able to: Understand the basic.

- The interaction of the world’s tallest building with the geology of the Basin the city is built in By Matthew Timmis and Mark Banham.

Chapter 8 – FROM SEDIMENT INTO SEDIMENTARY ROCK

SEDIMENTARY ROCKS, METAMORPHIC ROCKS, AND AGE DETERMINATION.

California Geologic History

Nonconformity - sedimentary rocks over crystalline (metamorphic or igneous) rocks N. Lindsley-Griffin, 1998.

GEOLOGY OF DEVILS TOWER NATIONAL MONUMENT Sedimentation Pat Frolander John Aloisio Marlon Poole Lee McDowell.

The Grand Canyon Tells the Story of North America Knowing how and where rocks are formed allows us to read the story written in the rocks. A mile thickness.

Landform Regions of Canada

Reading Material (see website for course) “Ocean Basins”, from “Oceanography” M.G. Gross, Prentice-Hall.

Mountain building & the evolution of continents

Reading Material On reserve in: Ocean-Fisheries library (Oceanography Teaching Building) Undergrad Library (web access) “Ocean Basins”, from “Oceanography”

Reading Material (see website for course) “Ocean Basins”, from “Oceanography” M.G. Gross, Prentice-Hall.

Quaternary convergence rate across the Sunland fault and related folds, near Sunland, California Shelby Dawson Department of Geological Sciences California.

UNIT 12 The history of the Earth Biology and Geology 4. Secondary Education TYPES OF STRATIGRAPHIC DISCONTINUITIES.

GEOLOGIC PRINCIPLES & RELATIVE DATING. HOW OLD IS THE EARTH? The Earth is about 4.6 billion years old Much of its history is recorded in the rocks Observations.

Sediments and Sedimentary Rocks What are sediments? Sediments are loose particles of former rocks. Sediments may be particles in the form of mineral grains.

Lesson 16: Coastal Dynamics Geological Oceanography

An Invitation to Marine Science, 7th

The Geologist as Detective.  THE PRINCIPLES USED IN DETERMINING THE ORDER IN WHICH ROCKS WERE FORMED.

1. California Rock Stories Linking tectonics to rock formation 2. Geologic History of California: Part II Ellen Metzger BAESI – July 2012 Source of photos:

A Geological Overview of North Central West Virginia: Observations from the Field Lyndsey Lieb and Angela Lands, Kennesaw State University and Mike Kelly.

Introduction to Coastal Process. Introduction  ½ world’s population in coastal regions  Coastal modification impacts humans and other organisms/plants.

Point Reyes National Park By: James Rivard. Year Of Establishment Point Reyes, north of San Francisco California, was named a National Park on September.

GIS data sources Data capture and compilation is very time consuming and costly Up to 80% cost of a GIS (Longley et al.) Primary Data – data captured specifically.

Continental Margins Continental shelf: shallowest part of the margin

Virginia Physical Geography. The Physiographic Provinces of Virginia Virginia has had a long, complex geologic history, over 1.1 billion years Events.

CHANGING EARTH Rocks, fossils, earthquakes, volcanoes.

Interpreting Earth’s Rocks to Determine Its Past History.

California Geologic Regions and Hazards Presentation DAY 2.

21.2 – Relative Age Dating How can you tell if one rock layer is older than another? How can you tell if one fossil is older than another? What is an index.

Stratigraphy Stratigraphy is the branch of geology that deals with the arrangement of rocks in layers.

Sedimentary Rocks.

Continental Margins and Ocean Basins. Continental Margins Three Main Divisions  Continental shelf  Continental slope  Continental rise.

Harry Williams, Geomorphology1 TECTONIC REGIONS OF NORTH AMERICA The distribution of tectonic activity around continents (including North America) usually.

Department of the Interior uses NOAA Hydrographic Services data, products and services Susan Russell-Robinson Acting Program Coordinator, USGS Coastal.

Sea Floor Maps - Why do we care? Fisheries management, especially marine protected areas Characterization of benthic habitats and ecosystems.

Types of Sedimentary Rocks Section 6.2. Clastic Most common Most common Form from abundant sediments at Earth’s surface Form from abundant sediments at.

Basic Geologic Principles * Principle of Superposition Principle of Original Horizontality Principle of Lateral Continuity Principle of Crosscutting Relationships.

The Regions of California Electronic Big Book Adaptation 2012 By Ms. Mary Ann Rechtfertig and Laura Barnett Previously Adapted by Melinda Rader Modified.

A Geological Overview of North Central West Virginia: Observations from the Field Lyndsey Lieb and Angela Lands, Kennesaw State University and Mike Kelly.

Natural Features of Continents Landforms click to continue.

Interpreting Ancient Environments

A Geological Overview of North Central West Virginia: Observations from the Field Lyndsey Lieb and Angela Lands, KSU and Mike Kelly and Minjuan Cheng of.

Geology of High Point, N.C. Linda Kennedy, Department of Geography, UNCG, July 2011.

Coyote Creek Field Exercise A mapping project in south central New Mexico Tim Walsh, Wayland Baptist University.

4.6 billion years ago… Earth came together as a cloud of dust and gas.

SEDIMENTARY ROCKS.

Ocean Floor Chapter 23. How much of the earth is covered by water? About 71%

Rock Relationships and Geological Histories You must have the presentation on Slide Show mode. On opening the presentation, you may be asked to enable.

SF Bay Regional Area and the CA Coast. Satellite Image of SF Bay.

Land of lava and strata.  Gondwana land – ancient southern super- continent (break up in the early Jurassic about 184 Mya)  Great thickness of sand.

Interpreting Earth’s Rocks to Determine Its Past History.

20.2. Continental Margins The line that divides the continental crust from the oceanic crust is not always obvious. Shorelines are not the true boundaries.

Rocks of different origins and ages occur in three fundamentally different geological provinces Mountain belts Cratons or shield areas Rift systems –Have.

Earth’s History Introduction: The earth is about 4.6 billion years old. Much of its history is recorded in the rock. Observations of fossils, rock types,

California’s Geologic History. Location, location, location…  Three continental plates come together  Very complex history.

Geologic time Relative dating

Q: Almost everyone knows that most of the Earth’s surface is covered in water. Where did all that water come from? Link.

Notes:CALIFORNIA GEOLOGY

Interpreting Earth’s Rocks to Determine Its Past History

Earth’s Crust Changes.

Q: Almost everyone knows that most of the Earth’s surface is covered in water. Where did all that water come from? Link.

DO NOW Pick up notes and Review #12

How Old is Old? Geologic Time.

VIRGINIA GEOLOGY.

CAUSES OF FOLDING Introduction: Folds may be classified as tectonic or non-tectonic in origin. Those of tectonic origin result more or less directly from.

Presentation transcript:

Shale Island Exploration of Shale Island

Shale Island Shale Island is but a small outcrop of shale located in southern Monterey Bay, California in a region referred to as by “shale beds” which covers an area of approximately 3.7 square miles (Iampietro et at, 2005). “Shale Island” protrudes from the muddy bay bottom and lies 0.55 miles directly east of the Coast Guard Pier, and approximately 0.5 miles north of Del Monte Beach in Monterey Bay, California. Shale Island measures approximately 475 feet long and over 125 feet wide at its widest exposure in the eastern-most part of the outcrop.

Location of Shale Island Source: Google Earth

Bathymetry Bathymetry source: Seafloor Mapping Lab, CSUMB

Shale Island and its origin Shale is a fine-grained, sedimentary rock that is derived from the erosion of previously eroded rocks by processes of weathering and erosion. Shale is usually composed of silt, clay-sized particles, and often microscopic marine organisms such as diatoms or their siliceous remains. The beds comprising Shale Island are identified by laminated semi- siliceous mudstone and sandy siltstone (Iampietro et al, 2005) and have been mapped by geologist as belonging to the Monterey Formation of middle Miocene age, making it roughly 15 million years old. The sediments comprising Shale Island were deposited in middle Miocene time in a deep basin that covered most of the bay. However, in Miocene times, the bay was located near the vicinity of the Transverse Range in Southern California (Greene, 1977).

In the vicinity of Shale Island the strata are mostly flat- lying with a very gentle dip to the west-northwest. This, however, changes abruptly in proximity to faults and granitic rocks in the bay where the strata are complexly folded (Greene, 1970). Shale Island and the numerous outcrops that comprise the Del Monte shale beds are habitats for numerous species of rockfish, perch, lingcod, and many benthic invertebrates including the plumose anemone and many species of sponges, cup corals, anemones, and sea stars (Iampietro et al, 2005; Kvitek et al, 2003).

Geologic Map of Portion of Monterey Bay

Partial Geologic Explanation Source: U.S. Geological Survey Open-File Report 97-30

References Cited Clark, J. C., Dupré, W. R., and Rosenberg, L. I, Geologic Map of the Monterey and Seaside 7.5 Minute Quadrangles, Monterey County: A Digital Database. U.S. Geological Survey Open-File Report Greene, H.G Regional tectonics and structural evolution of the Monterey Bay region, central California, in Garrison, R.E., Greene, H.G., Hicks, K.R., Weber, G.E., and Wright, T.L. (eds.), Geology and Tectonics of the Central California Coastal Region, San Francisco to Monterey: Pacific Section, American Association of Petroleum Geologists Volume and Guidebook GB 67, p Greene, H. G., Geology of the Monterey Bay Region, U. S Geological Survey Open-file Report Greene, H.G Geology of Southern Monterey Bay and its Relationship to the Ground Water Basin and Salt Water Intrusion. U. S. Geological Survey Open-file Report Iampietro, P. J., Kvitek, R. G., and Morris, E., Recent advances in automated genus-specific marine habitat mapping enabled by high-resolution multibeam bathymetry. Marine Technology Society v.39 no.3, Kvitek, R. G., Iampietro, P. J., and Summers-Morris, E., NOAA Technical Report: Integrated spatial data modeling tools for auto-classification and delineation of species- specific habitat maps from high-resolution, digital hydrographic data. NOAA Final Report: NOAA Award No. NA17OC2586. The bathymetry of Shale Island was obtained from data downloaded from the Seafloor Mapping Lab of the California State University Monterey Bay (CSUMB).