1

Geology, Palaeontology & Archaeology / Do I have to have a beard to be a real geologist?

« on: 23/08/2007 14:30:50 »

i don't have a beard (being female) but i'm working on it...

2

Geology, Palaeontology & Archaeology / where in the world is best for finding dinosaurs?

« on: 23/08/2007 14:28:18 »

China is a good place to look - US too - esp. Utah, New Mexico way (morrison fm, green river fm)

3

Geology, Palaeontology & Archaeology / laugh at, or with a geologist.

« on: 23/08/2007 14:26:33 »

are you "cummingtonite"?

4

Plant Sciences, Zoology & Evolution / Wasps

« on: 25/06/2007 20:44:09 »

Hi,

Bit of a random question this:

Wasps can be subterranean - but which species actually CONSTRUCT their nests underground?

And have wasps been known to transport large grains with which to build their nests?

I would be REALLY grateful for any help on this!  []

5

Geology, Palaeontology & Archaeology / Where in the world?

« on: 22/06/2007 10:20:07 »

Durdle door... []

6

Geology, Palaeontology & Archaeology / how is amber dated?

« on: 14/06/2007 12:33:04 »

Radio carbon dating can not be used on "older rocks" i can't remember the exact age but anything older than a couple of Ma is not possible. the only methods u could use would be to a) get a rough evolutionary age from any insects etc trapped in the amber or b) dating the surrounding sediment in which the amber is found either by magnetostratigraphy or biostratigraphy... []

7

Geology, Palaeontology & Archaeology / Where in the world?

« on: 04/06/2007 16:41:00 »

giant's causeway - Northern Ireland - beautiful  []

8

Geology, Palaeontology & Archaeology / Where in the world?

« on: 28/05/2007 13:35:07 »

err.. whats a flat iron? like an iron for ironing clothes?!  [] they're Los Mallos de Riglos near Huesca in north Spain. They're alluvial fan deposits sourced from the Pyrenees - really beautiful and the view from the top is stunning with beautiful eagles and vultures... []

9

Geology, Palaeontology & Archaeology / Where in the world?

« on: 23/05/2007 22:19:23 »

where/what is/are this/these?!

10

Geology, Palaeontology & Archaeology / Where in the world?

« on: 23/05/2007 22:00:52 »

you give it away.. Darwin arch?...Galapagas islands?... i wish and dream.... []

11

Geology, Palaeontology & Archaeology / Geology interests

« on: 18/05/2007 17:16:42 »

lets see how many people vote for geochemistry.... []

12

Geology, Palaeontology & Archaeology / Interesting structures.... ;-)

« on: 18/05/2007 13:39:28 »

ok.. well, i find them interesting! the first one is a subterranean social wasp nest found within a palaeosol in overbank deposits (Late Oligocene-Miocene, Ebro Basin) and the second is a subterranean termite nest, note the coalesced chambers, in alluvial fan deposits (!) of Miocene sediments (again ebro basin)

13

Geology, Palaeontology & Archaeology / continental drift.

« on: 17/05/2007 14:18:57 »

yes, where continents collide you get mountain chains, for example the collision of Africa with Europe that is ongoing has resulted in the Alps and the Pyrenees; the northward movement of the India into Asia has resulted in the Himalayas. However, rifting (the breaking apart of crust)forces the continents apart e.g. the increasing separation of Africa/Europe from the Americas along the mid Atlantic ridge, or the breakup of east Africa along the great rift. Currently the overall trend is for continents to break up, but they will eventually come back together. not quite sure what you mean by "other stuff"! :-)

14

Geology, Palaeontology & Archaeology / continental drift.

« on: 17/05/2007 11:43:45 »

yes. Studies of past continental drift have shown that the continents form and break up in cycles. Past supercontinents are approximately as follows:

Vaalbara (3.1 Ba)
Kenorland (2.7 Ba)
Colombia (1.4 Ba)
Rodinia (750 Ma)
Pangaea  (260Ma)

so chances are it will happen again!

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Geology, Palaeontology & Archaeology / Interesting structures.... ;-)

« on: 17/05/2007 08:07:01 »

they are oligocene-miocene in age.. and err... no.. none of the above! :-)

16

Guest Book / Science background?!

« on: 16/05/2007 15:37:26 »

lets see what everyones science background is!

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Geology, Palaeontology & Archaeology / Interesting structures.... ;-)

« on: 16/05/2007 11:46:17 »

Anyone have any ideas what these are? hint: they were found in continental sediments   [ Invalid Attachment ]  [ Invalid Attachment ]

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Geology, Palaeontology & Archaeology / new places

« on: 15/05/2007 17:07:42 »

for example the island of Surtsey off the south coast of iceland formed between 1963 and 1967 from a series of volcanic eruptions. The island is the size of 1.4 km2 already diminished from around 2.7 km2 at the time of formation.. so islands- even fairly large ones can come and go pretty rapidly! 

19

Geology, Palaeontology & Archaeology / Geology Question of the Week

« on: 03/05/2007 18:50:55 »

yes, what you say is correct, however, the sediment load can vary significantly seasonally. Are you after the river that can carry the maximum possible sediment load at any one time? or the river that carries the highest mean sediment load for say a year? I have asked around if anyone knows the answer (we're academic geologists of one type or another! []). There is a suggestion that a river in a glaciated area may carry the highest sed load seasonally but that a river such as the Bramahputra may carry the average highest sed load..  []

20

Geology, Palaeontology & Archaeology / Geology Question of the Week

« on: 03/05/2007 14:54:15 »

Is it in total discharge or per volume water per year or per day?