Question and answer
What type of information do scientist use to determine the approximate age of the earth? water layers of rock fossils atmospheric pressure
The earliest geological time scales simply used the order of rocks laid down in a sedimentary rock sequence (stratum) with the oldest at the bottom. [ However, a more powerful tool was the fossilised remains of ancient animals and plants within the rock strata. After Charles Darwin's publication Origin of Species (Darwin himself was also a geologist) in 1859, geologists realised that particular
fossils were restricted to particular layers of rock. This built up the first generalised geological time scale. Once formations and stratigraphic sequences were mapped around the world, sequences could be matched from the faunal successions. These sequences apply from the beginning of the Cambrian period, which contains the first evidence of macro-fossils. Fossil assemblages 'fingerprint' formations even though some species may range through several different formations. This feature allowed William Smith (an engineer and surveyor who worked in the coal mines of England in the late 1700s) to order the fossils he started to collect in south-eastern England in 1793. He noted that different formations contained different fossils and he could map one formation from another by the differences in the fossils. As he mapped across southern England, he drew up a stratigraphic succession of rocks although they appeared in different places at different levels. By matching similar fossils in different regions throughout the world, correlations were built up over many years. Only when radioactive isotopes were developed in the early 1900s did stratigraphic correlations become less important as igneous and metamorphic rocks could be dated for the first time. ]
Get an answer
Original conversation
User: What type of information do scientist use to determine the approximate age of the earth? water layers of rock fossils atmospheric pressure





Weegy: The earliest geological time scales simply used the order of rocks laid down in a sedimentary rock sequence (stratum) with the oldest at the bottom. [ However, a more powerful tool was the fossilised remains of ancient animals and plants within the rock strata. After Charles Darwin's publication Origin of Species (Darwin himself was also a geologist) in 1859, geologists realised that particular fossils were restricted to particular layers of rock. This built up the first generalised geological time scale. Once formations and stratigraphic sequences were mapped around the world, sequences could be matched from the faunal successions. These sequences apply from the beginning of the Cambrian period, which contains the first evidence of macro-fossils. Fossil assemblages 'fingerprint' formations even though some species may range through several different formations. This feature allowed William Smith (an engineer and surveyor who worked in the coal mines of England in the late 1700s) to order the fossils he started to collect in south-eastern England in 1793. He noted that different formations contained different fossils and he could map one formation from another by the differences in the fossils. As he mapped across southern England, he drew up a stratigraphic succession of rocks although they appeared in different places at different levels. By matching similar fossils in different regions throughout the world, correlations were built up over many years. Only when radioactive isotopes were developed in the early 1900s did stratigraphic correlations become less important as igneous and metamorphic rocks could be dated for the first time. ]
Expert answered|Ekaj18|Points 0|

User: What type of information do scientist use to determine the approximate age of the earth? water layers of rock fossils atmospheric pressure

Question
Asked 4/17/2012 5:47:05 PM
0 Answers/Comments
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
Questions asked by the same visitor
The early earth of the Hadean eon _____. had a poisonous atmosphere could support life was constantly hit with meteors had no volcanoes
Weegy: had a poisonous atmosphere User: The functions of the atmosphere today are _____. sustaining life with oxygen filtering harmful rays from the sun helps to protect Earth from meteor collisions removes nutrients from the soil keeps the earth's climate unstable Weegy: filtering harmful rays from the sun (More)
Question
Expert Answered
Asked 4/11/2012 8:56:48 PM
0 Answers/Comments
The four functions of the atmosphere are: To let in light To provide oxygen To re-radiate heat To shield the earth from ultraviolet rays and foreign objects
Weegy: The four functions of the atmosphere are: To let in light To provide oxygen To re-radiate heat To shield the earth from ultraviolet rays and foreign objects (More)
Question
Expert Answered
Asked 4/11/2012 9:20:07 PM
0 Answers/Comments
What type of information do scientist use to determine the approximate age of the earth? water layers of rock fossils atmospheric pressure
Weegy: layers of rock User: The Cretaceous-Tertiary extinction, the most famous of the Big Five, has been attributed to what major event(s) that triggered the extinction of the dinosaurs? an asteroid hitting the earth massive volcanoes erupting around the world rapid growth of forests on land surfaces falling sea levels increased competition from mammals (More)
Question
Expert Answered
Asked 4/17/2012 6:16:33 PM
0 Answers/Comments
catastrophism User: According to scientific evidence, the age of the earth is about _____ years. 3.5 billion 4.6 billion 7.2 billion 2.3 billion Weegy: 4.6 [ billion ]
Weegy: catastrophism User: According to scientific evidence, the age of the earth is about _____ years. 3.5 billion 4.6 billion 7.2 billion 2.3 billion Weegy: 4.6 [ billion ] (More)
Question
Expert Answered
Asked 4/17/2012 6:39:11 PM
0 Answers/Comments
17,972,494 questions answered
Popular Conversations
Weegy Stuff
S
L
1
1
1
1
L
1
L
Points 2722 [Total 15097]| Ratings 0| Comments 2722| Invitations 0|Offline
S
L
1
L
P
C
1
P
C
1
L
Points 1649 [Total 11130]| Ratings 4| Comments 1609| Invitations 0|Offline
S
1
L
1
L
P
P
L
Points 899 [Total 13128]| Ratings 0| Comments 899| Invitations 0|Offline
S
L
Points 615 [Total 2014]| Ratings 0| Comments 615| Invitations 0|Offline
S
1
L
L
Points 522 [Total 6316]| Ratings 3| Comments 492| Invitations 0|Online
S
Points 482 [Total 482]| Ratings 0| Comments 452| Invitations 3|Offline
S
Points 454 [Total 455]| Ratings 6| Comments 394| Invitations 0|Offline
S
Points 277 [Total 277]| Ratings 1| Comments 267| Invitations 0|Offline
S
L
Points 48 [Total 1265]| Ratings 1| Comments 38| Invitations 0|Offline
S
P
C
L
P
L
1
Points 48 [Total 6282]| Ratings 0| Comments 48| Invitations 0|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2014 Purple Inc.