The most difficult rocks riddlesGeology quiz
What is the literal meaning of the name Gibraltar?
The Altar of Gods
The Pillars of Hercules
The Gate of Tartarus
The Mountain of Tariq
The name "Gibraltar" is the Spanish derivation of the Arabic name Jabal Ṭariq, meaning "Mountain of Ṭariq". Following a raid in 710, a predominately Berber army under the command of Tariq ibn Ziyad crossed from North Africa in April 711 and landed somewhere in the vicinity of Gibraltar (though most likely not in the bay or at the Rock itself). Tariq's expedition led to the Islamic conquest of most of the Iberian peninsula.
Petrology is a branch of science concerned with...
finding an oil deposites
studying characteristics of petroleum only
studying various types of sediment
Petrology is the branch of geology that studies rocks and the conditions under which they form.
Dry Falls is thought to be the greatest known waterfall that ever existed. Where is it?
in the United States
Dry Falls is a 3.5 mile long scalloped precipice in central Washington. According to the current geological model, catastrophic flooding channeled water over this 400-foot (120 m) rock face at the end of the last ice age. At this time, it is estimated that the flow of the falls was ten times the current flow of all the rivers in the world combined.
What is the oldest rock in the world?
The Acasta Gneiss in the Canadian Shield in the Northwest Territories, Canada is composed of the Archaean igneous and gneissic cores of ancient mountain chains that have been exposed in a glacial peneplain. Analyses of zircons from a felsic orthogneiss with presumed granitic protolith returned an age of 4.031 ±0.003 Ga.
What is karst?
a kind of physical decomposition
a kind of chemical decomposition
a kind of biological decomposition
none of the above
Karst is a topography formed from the dissolution of soluble rocks such as limestone, dolomite, and gypsum. It is characterized by underground drainage systems with sinkholes and caves. It has also been documented for more weathering-resistant rocks, such as quartzite, given the right conditions.
What kind of rock is marble?
congealed lava under a volcano
Marble is a metamorphic rock. It is formed deep under the Earth surface, under high pressure and temperature between 500 and 700°C. Under such conditions calcite recrystallises and limestone is transformed into marble.