450 Million Years Before Now... EarthCache
450 Million Years Before Now...
-
Difficulty:
-
-
Terrain:
-
Size: 
(not chosen)
Please note Use of geocaching.com services is subject to the terms and conditions
in our disclaimer.
This earthcache will bring you to the spillway of Caesar Creek
Lake. Here you will learn how the climate was very different
millions of years ago. Due to the elevated waters during the
Ordovician, this inland area is filled with fossils of many sea
creatures. Fossil collection guidelines are listed at the site.
Also, you will need to read the information on the sign to answer
to the question below.
The geologic time scale is a chronologic schema (or idealized
Model) relating stratigraphy to time that is used by geologists and
other earth scientists to describe the timing and relationships
between events that have occurred during the history of Earth.
Evidence from radiometric dating indicates that the Earth is about
4.570 billion years old.
The Ordovician is a geologic period and system, the second of six
of the Paleozoic era, and covers the time between 488.3±1.7 to
443.7±1.5 million years ago. Sea levels were high during the
Ordovician; in fact during the Tremadocian, marine transgressions
worldwide were the greatest for which evidence is preserved in the
rocks.
During the Ordovician, the southern continents were collected into
a single continent called Gondwana. Gondwana started the period in
equatorial latitudes and, as the period progressed, drifted toward
the South Pole. Ordovician rocks are chiefly sedimentary. Because
of the restricted area and low elevation of solid land, which set
limits to erosion, marine sediments that make up a large part of
the Ordovician system consist chiefly of limestone. The Early
Ordovician climate was thought to be quite warm, at least in the
tropics. As with North America and Europe, Gondwana was largely
covered with shallow seas during the Ordovician.
More on this and other geological eras can be found at (visit link)
In order to log this cache please:
1) Take a picture of yourself at the listed of the coords and post
it with your log. Photo is Optional... Encouraged... Not
required.
2) Email me the anwer to this question: "If you were standing in
this spot 450 million years ago, what would you be standing in or
on, and why? (Be as specific as possible.)
Additional Hints
(No hints available.)
Treasures
You'll collect a digital Treasure from one of these collections when you find and log this geocache:
Loading Treasures