Geology of Southeastern New York
IDEAS Field Trip - October 2008

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All photos by J Bret Bennigton unless otherwise noted.

Stony Point State Historic Site, Stony Point, NY

Stony Point Diorite
Stony Point Diorite
Outcrop of biotite diorite (igneous pluton) at Stony Point battlefield. Photo by Ann Treglia
Biotite Diorite
Biotite Diorite
White crystals of plagioclase feldspar intergrown with black crystals of biotite mica. Photo by Ann Treglia
Palisades Ridge
Palisades Ridge
View of the Palisades Ridge from the lighthouse at Stony Point.
Annsvile Phyllite
Annsvile Phyllite
Exposure along railroad near entrance to Stony Point. Photo by Ann Treglia
Annsville Phyllite
Annsville Phyllite
Annsville phyllite - phyllite is a metamorphic rock composed of tiny grains of quartz and mica oriented into distinct layers, commonly folded. Photo by Ann Treglia
Annsville Phyllite
Annsville Phyllite
Sample showing large mica grains that formed in the rock due to contact metamorphism caused by the adjacent igneous pluton. Photo by Ann Treglia
Pyroxenite Pluton
Pyroxenite Pluton
Exposure at north end of railroad cut exposing pluton of ultramafic igneous rock. Photo by Ann Treglia
Pyroxinite
Pyroxinite
Pyroxenite is an igneous rock composed predominantly of pyroxene minerals. Photo by Dan Vellone
Fanglomerate beds
Fanglomerate beds
Beds of Late Triassic alluvial fan conglomerates ("fanglomerates"). Photo by Ann Treglia
Newark Basin Fanglomerate
Newark Basin Fanglomerate
Coarse clasts of limestone in a sandy matrix stained red with iron oxide.
Fanglomerate
Fanglomerate
Note clasts of limestone and red color of the surrounding sand matrix. Photo by Matt Leone
Clasts and Matrix
Clasts and Matrix
Newark Basin fanglomerate.
Group
Group
Group at the fanglomerate outcrop.
Group
Group
Enjoying Lunch
Enjoying Lunch

 

Dashville Hydroelectric Dam, Rt 213, NY

Normanskill Formation
Normanskill Formation
Interbedded greywackes and shales of the Normanskill Formation, exposed along Rt 213 near the Dashville dam.
Group at Dashville Stop
Group at Dashville Stop
Group in Front of Normanskill Fm
Group in Front of Normanskill Fm
Group in Front of Normanskill Fm
Group in Front of Normanskill Fm
   

 

Widow Jane Cement Mine, Rosendale, NY

Widow Jane Mine
Widow Jane Mine
Natural cement mine on the grounds of the Snyder Estate, Rosendale, NY.
Widow Jane Mine
Widow Jane Mine
Veronica and Anne in the mine.
Widow Jane Mine
Widow Jane Mine
Group photo inside the mine.
Group at John Boyd Thatcher
Group at John Boyd Thatcher
Group at John Boyd Thatcher
Group at John Boyd Thatcher
 

 

John Boyd Thatcher State Park, NY

Helderberg Escarpment
Helderberg Escarpment
View of the Helderberg escarpment at John Boyd Thatcher State Park.
Manlius and Students
Manlius and Students
Hiking through the Manlius Formation at John Boyd Thatcher State Park.
Manlius and Students
Manlius and Students
Manlius Formation
Manlius Formation
View of the Manlius Formation along the Indian Ladder Trail.
Manlius Tidal Deposits
Manlius Tidal Deposits
Tidal layering in the Manlius Formation.
Stromatoporoid Zone
Stromatoporoid Zone
Stromatoporoid beds near the top of the Manlius Formation.

Last modified 11-05-08 by J Bret Bennington. All rights reserved by the author. This document and images may not be distributed or posted in any format or reposted on any other server without permission. Permission is granted to download and display photos for educational purposes.
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