Columnar basalt (cooled lava) on Bagley Lakes trail near Mount Baker.

Basalt Columns like “Rock Fence Posts” in Yellowstone

Lava flows formed into basaltic rock, ranging in composition among alkaline olivine basalt, olivine nephelinite, and basanite. This porous, igneous rock forms the basalt cliffs seen near Fort Selkirk.

Basaltic prisms formed by the rapid cooling of volvanic lava. Santa María Regla, Hidalgo, Mexico.

Giants causeway Northern Ireland : Detail

Oenanthe lugens basalti, Basalt Wheatear, Mourning Wheatear (warriae), Oenanthe (lugens) warriae, סלעית הבזלות, Базальтовая траурная каменка

Basalt and sandstone formations, near Cap Lumiere, NB

On the Yellowstone River Picnic Area Trail

on the beach just before we got to Vík. (forgot the name).

Cliff-side outcropping of pillow basalt (extrusive volcanic rock) along the west side of the port facilities at Port San Luis, north end of San Luis Obispo Bay, between San Luis Obispo and Pismo Beach (Central Coast), California. Pillow basalts form during underwater volcanic eruptions (see Kilauea, Hawaii). These rocks are deep-water Franciscan, probably Jurassic-Cretaceous in age. This was a completely unexpected find for me so I only had my Iphone and the sun was in a bad position for photographing this, but it was such a spectacular outcrop that I had to grab some photos to share.

basalt block

The Gorge

Hand-carved Basalt...born from shotcrete, not from volcano!

Coastal Basalt, Oregon Zoo. Portland, OR.

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An outcrop of Precambrian basalt on a wooded island, reflected in the St. Croix River.

Best viewed large.

St. Croix National Scenic Riverway, Minnesota and Wisconsin

June 16, 2011

Eastern end of Kit Mountain with basalt lava flows exposed.

Here you go... more closeup to show you the texture of this piece of igneous rock!

Big Island, Hawaii

Basalt Geology 102 Gordon

Off Hwy. 17, above Lake Lenore Caves.

thrift shop. we really have no room in our luggage, so we couldn't buy anything, but we looked and we thought about it.

noddyboom

Basalt sea stacks at Reynisfjara Beach, Iceland

Hallgrímskirkja, Reykjavík, Iceland - March 12, 2011

It is said that design of certain parts of the church drew inspiration from the basalt column formation found in many places in Iceland