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Concrete Jungle Architectural Geology Tour Multi-cache

Hidden : 11/29/2005
Difficulty:
2.5 out of 5
Terrain:
3 out of 5

Size: Size:   small (small)

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Geocache Description:

This educational multicache is designed to take you on a short (30-45 minutes) walking tour of downtown Raleigh, followed by a short drive to the actual cache in a park. It will point out the various rocks that were used to build several of the downtown landmark buildings, and give you a brief introduction to the geology of these stones. More information can be gathered at the NC Museum of Natural Sciences.

 

 

The actual cache can be found at N 35 47.ABC W 078 38.DEF 

 

It is full of North Carolina related items to start it off. Please trade fairly, and re-hide it the same way you found it so those seeking behind you can enjoy the same experience as you. You are quite close to a trail, so please be discrete when necessary.

 

 

N 35 46.621 W 078 38.333 This building’s exterior is made of a deep red igneous rock known as syenite, mined near Concord, NC. About 400 million years ago, a magma chamber full of molten rock sat below the surface of what is now the Charlotte-Concord-Kannapolis region. This chamber was more than 3 miles deep and 6 miles wide. The syenite which is composed almost entirely of alkali feldspar is the last bit of crystallized liquid from this chamber.

How many words are there over the Fayetteville Street Entrance? This number=F

 

N 35 46.719 W 078 38.361 This building’s exterior is primarily Abbey Rose, a granite from Quebec, Canada, also used in the base of the Statue of Liberty. It comes from the Grenville Province, and is just over 1 billion years old. This province is the namesake of the Grenville Orogeny, the first mountain building event in the Appalachians. The collision of North and South America formed this Orogeny, which extends from Canada to Alabama.

How many steps lead into this building from the east side? Four plus this number =E

 

 

N 35 46.827 W 078 38.311 The stones for the Capitol, built in 1840 were mined from quarried that once operated near downtown Raleigh. Known as Raleigh Gneiss, this metamorphic rock is about 544 million years old. Look for the characteristic streaks, bands, and lines. Also notice veins of igneous rock containing pink feldspar and grey quartz cutting across the gneiss.

The coordinates take you to a statue on the east façade of this building. The sculptor’s name is located somewhere, the second digit after his name minus three=A

 

N 35 46.860 W 078 38.344 The uniform white granite in this memorial is known as Mount Airy Granite (about 335 million years old). It is the NC State Rock, mined from the largest open-face granite quarry in the world. This granite is a fixture in downtown architecture.

How many bronze discs surround the eternal flame? That number minus three=B

 

 

N 35.46.912 W 078 38.346 Two distinct stone types make up this façade-pink granite from St. Cloud MN (about 2.7 million years old) called Diamond Pink, and smaller inserts of a darker red metamorphic rock (about 1.7 billion years old) from Manitoba Canada. The latter is foliated granite, meaning the crystals have a distinct orientation. Compare this to the more random pattern of minerals in the Diamond Pink. The black specks are pieces of biotite mica.

There are three figures on the front steps of this building, but only one has a hat. The last number of the year he died plus three=C

 

N 35.46.945 W 078.38.340 The lower exterior and columns are made of 300 million year old granite from Georgia. Granite of this age is found throughout the Carolinas and Georgia. It contains minerals known as pink alkali feldspars, which have distinct rectangular crystals. Look carefully at them and you’ll find examples of twinned crystals; mirror images of each other. They resemble an open book with a line down the middle.

How many columns are at the entry of this building? Two times that number =D

 






Additional Hints (Decrypt)

Vg'f jryy ebbgrq va bhe pvgl'f uvfgbel.

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)