Sighdell's Geology Posts

June 11, 2021

The Rocks at Land's End

The exposed bedrock of Bailey Island is mostly metamorphosed volcanic and sedimentary rocks that were deposited about 450 million years ago. The rusty brown…

by sighdell

Aug. 23, 2019

Out of Place at Schoodic Point

by sighdell

Aug. 23, 2019

Diabase Dikes - Schoodic Point

by sighdell

Nov. 09, 2018

Real Friendship

by sighdell

May 03, 2018

Stoned

by sighdell

Feb. 23, 2018

Glacial Boulder

by sighdell

Feb. 22, 2018

Foliated Rock

by sighdell

Oct. 21, 2017

Potholes in the Androscoggin Riverbed - Created by Erosional…

Potholes form when sediment carried by a river scour the bed. Where depressions exist in the channel floor turbulent flow can cause pebbles to spin around and…

by sighdell

Aug. 12, 2017

Layers

by sighdell

June 13, 2017

Stressful Breakup

Marginal Way - Ogunquit, Maine When the super continent Pangea started to break up between 210 and 130 million years ago, molten magma shot up through the…

by sighdell

April 18, 2017

The Rocks of Wolf's Neck Woods State Park

The park provides shore access to a variety of geologic features and rock types. A very sharp contact between two rock types can be seen here. The light colored…

by sighdell

April 07, 2017

Garnet Sand

Sandy Point Beach on Cousins Island is well known to the geology crowd. It was named the Geologic Site of the Month in April 2008 by the Maine Geological…

by sighdell

April 19, 2016

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Sighdell's Geology Posts

The Rocks at Land's End

Out of Place at Schoodic Point

Diabase Dikes - Schoodic Point

Real Friendship

Stoned

Glacial Boulder

Foliated Rock

Potholes in the Androscoggin Riverbed - Created by Erosional…

Layers

Stressful Breakup

The Rocks of Wolf's Neck Woods State Park

Garnet Sand

Aragonite Stalactite from Chihuahua, Mexico

Bubble-Gum Pink Fluorite From the Famous Mina Navidad Mine…

It's Raining Natural Glass - Tektites

MMGS Gem and Mineral Show - Silent Auction Table

Volcanic Glass

Rare Calcite Crystals replacing fossil Coral Skeleton

Selenite Desert Rose from the Western Sahara Desert in…

Celestine - Sky Blue Mineral from Madagascar