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
21,061,525 questions answered
Popular Conversations
The Sarbanes-Oxley Act of 2002 (SOX) was largely a response to-
Weegy: As a result of SOX, top management must individually certify the accuracy of financial information. User: A ...
5/25/2015 7:13:43 AM| 2 Answers
The Earth is located in the Milky Way, which is a ____________ ...
Weegy: The Earth is located in the Milky Way, which is a spiral galaxy. User: The revolution of the Earth creates ...
5/25/2015 9:41:50 AM| 2 Answers
Types include rain, sleet, snow and hail
Weegy: Precipitation creates clouds, snow, sleet, rain and hail. User: Is the only known planet that is able to ...
5/25/2015 9:45:12 AM| 2 Answers
Daffydowndilly's dialogue with the stranger shows that Daffydowndilly ...
Weegy: D. open-minded User: Which lines from the poem most clearly express the poet's philosophical approach to the ...
5/25/2015 1:25:13 PM| 2 Answers
Use the discriminant to describe the roots of each equation. Then ...
Weegy: 3x^2 - 2 + 7x = 0 discriminant = b^2 - 4ac = 7^2 - 4(3)(-2) = 49 + 24 = 73 > 0 There are Two Real Irrational ...
5/25/2015 1:48:40 PM| 2 Answers
Weegy Stuff
S
L
Points 706 [Total 1236]| Ratings 2| Comments 686| Invitations 0|Offline
S
Points 616 [Total 624]| Ratings 1| Comments 606| Invitations 0|Offline
S
1
Points 525 [Total 917]| Ratings 2| Comments 505| Invitations 0|Online
S
L
P
Points 313 [Total 2790]| Ratings 1| Comments 303| Invitations 0|Offline
S
P
C
L
P
L
1
P
P
1
P
1
Points 248 [Total 8994]| Ratings 0| Comments 248| Invitations 0|Offline
S
Points 118 [Total 138]| Ratings 0| Comments 118| Invitations 0|Online
S
1
L
L
Points 67 [Total 8250]| Ratings 0| Comments 67| Invitations 0|Offline
S
L
Points 56 [Total 3810]| Ratings 2| Comments 36| Invitations 0|Offline
S
L
1
R
Points 35 [Total 1322]| Ratings 0| Comments 35| Invitations 0|Offline
S
Points 14 [Total 14]| Ratings 0| Comments 14| Invitations 0|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2015 Purple Inc.