Thematic The Earth's Bones

**noelcmn** · 09-09-2021, 05:15 AM - **1 Like**

A close up view of the same thing though I am not so sure!

**Clarkey** · 09-22-2021, 03:51 PM

Originally posted by OrchidJulie

Pondering the tectonic forces evident in that formation is mind-bending (no pun intended). Incredible!

Many thanks! The road is a little exciting. Flooded occasionally and subject to seaside cliff avalanches....

---------- Post added 09-22-2021 at 06:52 PM ----------

Originally posted by noelcmn

A close up view of the same thing though I am not so sure!

Yeah, maybe the first! I couldn't get up there to see but the "white" cliff layer was definitely softer and not quartzite.

Sandy Hancock · 09-22-2021, 06:28 PM - **3 Likes**

This might not win any photographic prizes, but these are some of the oldest rocks on the surface of the earth; the range in the background is about 1.6 billion years old.

Arkaroola, northern Flinders Ranges, South Australia

Sandy Hancock · 09-22-2021, 06:39 PM - **2 Likes**

These rocks are mere babies by comparison; only 600 million or so years. My mighty wife is somewhat younger.

Moonarie top camp, Wilpena Pound, central Flinders Ranges, South Australia

**WPRESTO** · 09-24-2021, 09:02 AM - **2 Likes**

Originally posted by Sandy Hancock

This might not win any photographic prizes, but these are some of the oldest rocks on the surface of the earth; the range in the background is about 1.6 billion years old.

Arkaroola, northern Flinders Ranges, South Australia

Australia has exceptional rocks of great age, especially considering that some contain fossils, but the oldest rocks exposed on the Earth's surface are in the Canadian Shield. Some around Hudson's Bay have been dated to 4.28 billion years. I personally like to state that as "about four and a quarter thousand million." To beat a dead horse (or a very dead pre-Cambiran fossil), the Canadian rocks are much more than twice as old as those in the Flinders Range.

dbs · 09-26-2021, 09:07 PM

Originally posted by WPRESTO

Australia has exceptional rocks of great age, especially considering that some contain fossils, but the oldest rocks exposed on the Earth's surface are in the Canadian Shield. Some around Hudson's Bay have been dated to 4.28 billion years. I personally like to state that as "about four and a quarter thousand million." To beat a dead horse (or a very dead pre-Cambiran fossil), the Canadian rocks are much more than twice as old as those in the Flinders Range.

Maybe so ...... but do they look pretty ?

Just got back from Wilpena Pound ( 600 million years old ).

**WPRESTO** · 09-27-2021, 06:00 AM

Originally posted by dbs

Maybe so ...... but do they look pretty ?

Just got back from Wilpena Pound ( 600 million years old ).

Beauty (= "pretty") as they say, is in the eye of the beholder. Although we did not get to the Flinders Range during our Australia trip, from pictures I've seen I would agree that the rocks in Australia are in some manner more appealing. Much of the Canadian Shield, especially when you get to the north shore of Hudson's Bay, is very bleak (BTW, I only know that region through pictures as well)

**noelcmn** · 09-28-2021, 12:59 AM - **1 Like**

More layered stuff

**WPRESTO** · 09-28-2021, 05:56 AM

Bones along the coast of Oahu. If you look at the the small headland just past the beach there is water squirting up through a blowhole (hence the parking lot above it). I got the impression that all of Hawaii is underlain by geology, most of it volcanic bones.

OrchidJulie · 09-29-2021, 05:19 AM

Originally posted by WPRESTO

I got the impression that all of Hawaii is underlain by geology, most of it volcanic bones.

Indeed, it is. The islands sit above a "hot spot" plume in the Pacific Plate, tectonic movement of the plate can be inferred from the location of each island.

jgnfld · 09-14-2022, 06:21 PM - **5 Likes**

580 to 541 million year old Pre-Cambrian fossils
Ediacaran fossils (pre-Cambrian) fossils at Mistaken Point, Newfoundland. There are only a score or so sites around the world where these can be found and the Mistaken Point site has more diversity than other sites. None of these fossils belong to evolutionary lines that still exist, though some researchers think that some of the fossils here may be protosponges (not these three). For over a half billion years old, the level of detail is rather amazing.

jcdoss · 09-15-2022, 02:14 AM

Originally posted by jgnfld

580 to 541 million year old Pre-Cambrian fossils

Fascinating! Thanks for sharing these.

**WPRESTO** · 09-16-2022, 10:25 AM

A trail through Earth's fossils. During the Modoc War the Modoc had a strong point near where I'm standing with the only reasonable approach along this trail. Easy to defend, near suicide to assault their position. The basaltic lava is not terribly old, about 15~17 my.

gifthorse · 10-04-2022, 11:48 AM - **1 Like**

Tufas (calcium carbonate), a common sight in the Great Basin. These are The Needles at Pyramid lake in Nevada.

Some sense of scale

**KC0PET** · 11-01-2022, 08:12 PM - **1 Like**

Spillway of Pomme de Terre Lake in MO. I believe this is a man made rock cut, but has had time to weather and look a little more natural.

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09-09-2021, 05:15 AM - 1 Like	#871
noelcmn Site Supporter Join Date: Jul 2009 Location: South Africa-Johannesburg Photos: Gallery \| Albums Posts: 46,182	A close up view of the same thing though I am not so sure!

09-22-2021, 03:51 PM	#872
Clarkey Site Supporter Join Date: Jan 2008 Location: Brampton, ON, Canada Photos: Gallery Posts: 2,456	Originally posted by OrchidJulie Pondering the tectonic forces evident in that formation is mind-bending (no pun intended). Incredible! Many thanks! The road is a little exciting. Flooded occasionally and subject to seaside cliff avalanches.... ---------- Post added 09-22-2021 at 06:52 PM ---------- Originally posted by noelcmn A close up view of the same thing though I am not so sure! Yeah, maybe the first! I couldn't get up there to see but the "white" cliff layer was definitely softer and not quartzite.

09-22-2021, 06:28 PM - 3 Likes	#873
Sandy Hancock Moderator Site Supporter Join Date: Feb 2012 Location: Adelaide Hills, South Australia Photos: Gallery \| Albums Posts: 11,272	This might not win any photographic prizes, but these are some of the oldest rocks on the surface of the earth; the range in the background is about 1.6 billion years old. Arkaroola, northern Flinders Ranges, South Australia

09-22-2021, 06:39 PM - 2 Likes	#874
Sandy Hancock Moderator Site Supporter Join Date: Feb 2012 Location: Adelaide Hills, South Australia Photos: Gallery \| Albums Posts: 11,272	These rocks are mere babies by comparison; only 600 million or so years. My mighty wife is somewhat younger. Moonarie top camp, Wilpena Pound, central Flinders Ranges, South Australia

09-24-2021, 09:02 AM - 2 Likes	#875
WPRESTO Loyal Site Supporter Join Date: Aug 2010 Location: Massachusetts Photos: Gallery \| Albums Posts: 59,108	Originally posted by Sandy Hancock This might not win any photographic prizes, but these are some of the oldest rocks on the surface of the earth; the range in the background is about 1.6 billion years old. Arkaroola, northern Flinders Ranges, South Australia Australia has exceptional rocks of great age, especially considering that some contain fossils, but the oldest rocks exposed on the Earth's surface are in the Canadian Shield. Some around Hudson's Bay have been dated to 4.28 billion years. I personally like to state that as "about four and a quarter thousand million." To beat a dead horse (or a very dead pre-Cambiran fossil), the Canadian rocks are much more than twice as old as those in the Flinders Range.

09-26-2021, 09:07 PM	#876
dbs Pentaxian Join Date: Jun 2010 Location: Clare Valley S A Photos: Albums Posts: 7,563	Originally posted by WPRESTO Australia has exceptional rocks of great age, especially considering that some contain fossils, but the oldest rocks exposed on the Earth's surface are in the Canadian Shield. Some around Hudson's Bay have been dated to 4.28 billion years. I personally like to state that as "about four and a quarter thousand million." To beat a dead horse (or a very dead pre-Cambiran fossil), the Canadian rocks are much more than twice as old as those in the Flinders Range. Maybe so ...... but do they look pretty ? Just got back from Wilpena Pound ( 600 million years old ).

09-27-2021, 06:00 AM	#877
WPRESTO Loyal Site Supporter Join Date: Aug 2010 Location: Massachusetts Photos: Gallery \| Albums Posts: 59,108	Originally posted by dbs Maybe so ...... but do they look pretty ? Just got back from Wilpena Pound ( 600 million years old ). Beauty (= "pretty") as they say, is in the eye of the beholder. Although we did not get to the Flinders Range during our Australia trip, from pictures I've seen I would agree that the rocks in Australia are in some manner more appealing. Much of the Canadian Shield, especially when you get to the north shore of Hudson's Bay, is very bleak (BTW, I only know that region through pictures as well)

09-28-2021, 12:59 AM - 1 Like	#878
noelcmn Site Supporter Join Date: Jul 2009 Location: South Africa-Johannesburg Photos: Gallery \| Albums Posts: 46,182	More layered stuff

09-29-2021, 05:19 AM	#880
OrchidJulie Moderator Loyal Site Supporter Join Date: Jun 2012 Location: Magic City Photos: Gallery \| Albums Posts: 6,937	Originally posted by WPRESTO I got the impression that all of Hawaii is underlain by geology, most of it volcanic bones. Indeed, it is. The islands sit above a "hot spot" plume in the Pacific Plate, tectonic movement of the plate can be inferred from the location of each island.

09-14-2022, 06:21 PM - 5 Likes	#881
jgnfld Moderator Loyal Site Supporter Join Date: Feb 2015 Location: Avalon Peninsula, Newfoundland Photos: Gallery \| Albums Posts: 1,789	580 to 541 million year old Pre-Cambrian fossils Ediacaran fossils (pre-Cambrian) fossils at Mistaken Point, Newfoundland. There are only a score or so sites around the world where these can be found and the Mistaken Point site has more diversity than other sites. None of these fossils belong to evolutionary lines that still exist, though some researchers think that some of the fossils here may be protosponges (not these three). For over a half billion years old, the level of detail is rather amazing.

09-15-2022, 02:14 AM	#882
jcdoss Pentaxian Join Date: Nov 2012 Location: Ingelheim am Rhein, Germany Photos: Gallery \| Albums Posts: 6,769	Originally posted by jgnfld 580 to 541 million year old Pre-Cambrian fossils Fascinating! Thanks for sharing these.

10-04-2022, 11:48 AM - 1 Like	#884
gifthorse Pentaxian Join Date: Dec 2011 Location: Nevada Photos: Gallery Posts: 2,945	Tufas (calcium carbonate), a common sight in the Great Basin. These are The Needles at Pyramid lake in Nevada. Some sense of scale

11-01-2022, 08:12 PM - 1 Like	#885
KC0PET Loyal Site Supporter Join Date: Oct 2015 Location: Central Missouri Photos: Gallery \| Albums Posts: 6,273	Spillway of Pomme de Terre Lake in MO. I believe this is a man made rock cut, but has had time to weather and look a little more natural.