Tuesday, February 26, 2019

Geology of the National Parks Through Pictures - The National Mall

My next post about the Geology of the National Parks Through Pictures is about some parks visited a long time ago within Washington D.C.




You can find more Geology of the National Parks Through Pictures as well as my Geological State Symbols Across America series at my website Dinojim.com.

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Looking down the National Mall at the Capitol Building (circa 1995).

Originally Washington D.C. started out as a tidal flat wetland with three different sides surrounded by water: the Potomac River on the south, Rock Creek to the west, and the Anacostia River to the east. During the 1800's and 1900's the land was drastically altered by the construction of new buildings and roads, dump sites (such as the present location of the Lincoln Memorial), and eventually dredging and draining of the rivers to expand the city itself. Seawall construction along the Anacostia river in the early 1900's eliminated ~90% of the remaining tidal marshes at that time.

Although most of the wetlands have been removed from the city by today, there are still a small percentage of wetlands scattered throughout the area.

References

Monday, February 25, 2019

Geology of the National Parks Through Pictures - Lincoln Memorial

My next post about the Geology of the National Parks Through Pictures is about some parks visited a long time ago within Washington D.C.




You can find more Geology of the National Parks Through Pictures as well as my Geological State Symbols Across America series at my website Dinojim.com.

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 View of the Lincoln Memorial from circa 1990. The Lincoln Memorial is composed of six different principle building stones from across the country. 

Sunday, February 24, 2019

Geology of the National Parks Through Pictures - FDR Memorial

My next post about the Geology of the National Parks Through Pictures is about some parks visited a long time ago within Washington D.C.




You can find more Geology of the National Parks Through Pictures as well as my Geological State Symbols Across America series at my website Dinojim.com.

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The FDR Memorial is built with a reddish-grey granite called Carnelian Granite. The granite was quarried from a quarry near Milbank, South Dakota.

Saturday, February 23, 2019

Geological State Symbols Across America - Delaware

The next state up for the Geological State Symbols Across America is:

Delaware


You can find any of the other states geological symbols on my website here: Dinojim.com (being updated as I go along this year).

                                                                             Year Established
State Mineral: Sillimanite                                            1977
State Fossil: Belemnitella americana (Belemnite)       1996

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Thursday, February 14, 2019

Geological State Symbols Across America - Connecticut

The next state up for the Geological State Symbols Across America is:

Connecticut


You can find any of the other states geological symbols on my website here: Dinojim.com (being updated as I go along this year).

                                                                                        Year Established
State Mineral: Almandine Garnet                                            1977
State Fossil: Eubrontes giganteus Dinosaur Track                   1991
State Dinosaur: Dilophosaurus                                                2017

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Saturday, February 09, 2019

Geological State Symbols Across America - Colorado

The next state up for the Geological State Symbols Across America is:

Colorado


You can find any of the other states geological symbols on my website here: Dinojim.com (being updated as I go along this year).

                                                                                        Year Established
State Rock: Yule Marble                                                          2004
State Mineral: Rhodochrosite                                                  2002
State Gemstone: Aquamarine                                                  1971
State Fossil: Stegosaurus                                                          1982

I also have two Geology of the National Parks Through Pictures that I have done for Colorado previously. These include:

Black Canyon of the Gunnison National Park
Rocky Mountain National Park

Thursday, February 07, 2019

Geology of the National Parks Through Picture - Fort Point NHS

My next post about the Geology of the National Parks Through Pictures is part of a series of parks that the wife and I hit while we were visiting the wineries in the Sonoma Valley.




You can find more Geology of the National Parks Through Pictures as well as my Geological State Symbols Across America series at my website Dinojim.com.

This post relates to the California Geological State Symbols post that came out earlier this week.

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The last National Park we visited on this trip was within the Golden Gate National Recreation Area. 
Our entrance sign traditional pic with the Golden Gate Bridge and part of Fort Point in the background.

Wednesday, February 06, 2019

Geology of the National Parks Through Pictures - Golden Gate NRA

My next post about the Geology of the National Parks Through Pictures is part of a series of parks that the wife and I hit while we were visiting the wineries in the Sonoma Valley.




You can find more Geology of the National Parks Through Pictures as well as my Geological State Symbols Across America series at my website Dinojim.com.

This post relates to the California Geological State Symbols post that came out earlier this week.

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Golden Gate National Recreation Area
Continuing our trip from the Muir Woods National Monument, we then travailed some of the Presidio's national parks, including taking pictures of the Golden Gate Bridge itself. We weren't able to visit a lot of the surrounding areas of the park but hopefully we will be able to visit them at a future date.


Arriving at the Golden Gate Bridge we went to take in the overlook of the bridge and got an eyeful of the famous San Francisco fog. The fog is produced when the hotter air located within the city itself and the surrounding areas come in contact with the cool air blowing in off the Pacific ocean. When these two air masses come in contact, the warmer air is forced upwards creating clouds, or in this instance, fog.

Monday, February 04, 2019

Geology of the National Parks Through Pictures - Muir Woods

My next post about the Geology of the National Parks Through Pictures is part of a series of parks that the wife and I hit while we were visiting the wineries in the Sonoma Valley.




You can find more Geology of the National Parks Through Pictures as well as my Geological State Symbols Across America series at my website Dinojim.com.

This post relates to the California Geological State Symbols post that came out earlier this week.

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There isn't a lot of geology at this park, but we got some great tree pictures.

 Our entrance sign photo.

Saturday, February 02, 2019

Geological State Symbols Across America - California

The next state up for the Geological State Symbols Across America is:

California


You can find any of the other states geological symbols on my website here: Dinojim.com (being updated as I go along this year).

                                                                                        Year Established
State Rock: Serpentine                                                             1965
State Mineral: Gold                                                                 1965
State Gemstone: Benitoite                                                       1985
State Fossil: Smilodon fatalis (saber-toothed cat)                    1973
State Dinosaur: Augustynolophus morrisi                               2017

I also have several Geology of the National Parks Through Pictures that I have done for California previously. These include:

Death Valley National Park
Joshua Tree National Park