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Geochronology/Ice cores/Quiz

< Geochronology | Ice cores

Ice cores is a lecture from the school of geology.

File:Tilting the shallow drill.jpg
In the color image the "Rolls Royce" drill is being tilted into a shallow hole for drilling from a vertical position. Credit: Willi Dansgaard.

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Quiz

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1 Geochronology is the science of applying dates in the past to?

2 The Palaeozoic, Mesozoic and Cenozoic are eras of the?

eon.

3 The two million year Quaternary period is the time of recognizable?

4 Complete the text:

Match up the geological time unit with the title:
Holocene - A
Gelasian - B
Paleogene - C
Triassic - D
Devonian - E
Archean - F
Precambrian - G
period of the Mesozoic

.
supereon

.
age

.
eon

.
epoch

.
period of the Paleozoic

period

.

5 Orbitally forced cyclicity includes?

Jupiter-Venus conjunctions
chemical and physical proxies from sedimentary rock sequences
palaeoclimatic studies
marine Cenozoic sequences
meteorite impacts from the asteroid belt
spectral analysis of the magnetic susceptibility (MS) record

6 Complete the text:

Match up the type of phenomena with the name:
Precambrian - A
Proterozoic - B
Adelaidean - C
Neoproterozoic - D
Ediacaran - E
Cryogenian - F
when algae and sponges flourished

.
marked by the build up of oxygen in the atmosphere

.
the Marinoan and the Sturtian

.
the time and geology dated before the Phanerozoic

.
the interglacial Tapley Hill Formation

the Delamerian Granites and the Adelaide Rift Complex

.

7 Which of the following is out of reverse geochronological order?

Pleistocene
Holocene
Pliocene
Miocene
Oligocene
Eocene

8 What phenomena may be associated with K/Pg boundary?

clay in the Geulhemmergroeve tunnels near Geulhem, The Netherlands
the Badlands near Drumheller, Alberta
the cliffs at Stevns
an extensive osmium layer
traces of Fe-Ni alloys
Trinidad Lake State Park, Colorado, USA

9 True or False, In the Greenland ice cores, the Pleistocene–Holocene transition is chronologically constrained between two clearly defined tephra horizons.

TRUE
FALSE

10 The Holocene starts at ~11,700 b2k and extends to the?

11 Which geological phenomena are associated with the Subboreal?

period around 850-760 BC
characterized by an increase in solar activity
a sharp increase of Δ 14C
characterized by a decrease in solar activity
preceded by the Subatlantic
solar forcing of climate change

12 Complete the text:

The Pre-boreal period marks the transition from the

climate of the Late-glacial to the

climate of the

time.

13 The Chalcolithic is often referred to as the Copper?

14 Which geochemical phenomena are associated with the Younger Dryas?

during the Last Glacial Termination
an abrupt return to interglacial conditions
an abrupt return to glacial-like conditions
summer (1 May to 30 September) temperature dropped 5-6°C during less than two centuries
transition to a warmer, interglacial climate
indicated by changes in Neogloboquadrina pachyderma


Hypotheses

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Main resource: Hypotheses
  1. Tephra layers may be the best geochronometer.

See also

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{{Archaeology resources}}

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