GuidesMagazineToolsFossilsHunts
Sign up Latest Topics
 
 
 


Reply
  Author   Comment   Page 3 of 30      Prev   1   2   3   4   5   6   Next   »
prep01

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,793
Reply with quote  #101 
Supa!


__________________
Colin Huller
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #102 
Here's a weathered slice of Actinocyathus with a nice pattern of silicification:

side A:
IMG_1748_-_Copy.JPG 
IMG_1748_-_Copy_2.JPG 


__________________
Tarquin
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #103 
Actinocyathus side B:

IMG_1746_-_Copy.JPG 
IMG_1747_-_Copy.JPG 


__________________
Tarquin
0
Bill G

Avatar / Picture

Administrator
Registered:
Posts: 1,513
Reply with quote  #104 
Lovely find, looks really nice. Unusual. Edited by Bill G 2012-04-19 19:19:26
__________________
Cheers, Bill
0
fussy fossiler

Avatar / Picture

Triassic Titan
Registered:
Posts: 438
Reply with quote  #105 
your latest finds are amazing tarquin and your photography skills are great  and i agree with bill about it being unusual .

regards

sarah

__________________
"Gravy !?, I love gravy its' us northerners favourite soft drink "
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #106 
Thanks very much, Bill & Sarah - I've no real photography skills but I use a tripod, two table top studio lights and camera with macro/supermacro set on 2 second delay, the camera does it all!
It has lots of settings that I don't understand.


__________________
Tarquin
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #107 
This neat Actinocyathus laticlavia turned up today in a freshly rain washed patch of pebbles in a stream bank.

Specimen 6cm across, diameter of corallite in centre is about 30mm ("standard" A. floriformis corallites are  half that or less, 10-15mm, otherwise there's little difference and this may just be a large sub species or variety of floriformis).

IMG_1759_-_Copy.JPG 






__________________
Tarquin
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #108 
A scarce little thing from a Brigantian shale, I think it's the tabulate coral Cladochonus sp.

Scale bar 5mm.

IMG_1751_-_Copy.JPG 



__________________
Tarquin
0
prep01

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,793
Reply with quote  #109 
Nice - wish I had those in the cretaceous !


__________________
Colin Huller
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #110 
Thanks, Colin - and I wish there was some Cretaceous nearer me!


__________________
Tarquin
0
prep01

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,793
Reply with quote  #111 
"The grass........"
Why don't we do a swap for a year?




__________________
Colin Huller
0
dinogary

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 1,545
Reply with quote  #112 


like the new coral tarquin

__________________
Growing old is compulsory, Growing up is optional!
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #113 
Thanks, Gary - just saw your comment.

Here's a Chaetetes with wider tubes than the usual one from here (Great Limestone, near Frosterley, Weardale). The plentiful horizontal tabulae are very tabulate coral-like but it's apparently a sponge.

IMG_1768_-_Copy.JPG 
IMG_1770_-_Copy.JPG 


__________________
Tarquin
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #114 
Closeup of the Chaetetes, 1mm scale bar:

IMG_1767_-_Copy.JPG 



__________________
Tarquin
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #115 


I was very pleased to pick this up a couple of days ago, I already had a couple of rather poor specimens from the same Gigantoproductus-rich horizon within the Weardale Great Limestone but it's rather rare here.
I think it's usually referred to Aulopora, a very long ranging genus  (Ordovician to Permian, loads of nice ones in the Wenlock Limestone).
The specimens I have seem to be encrusting shells and other debris.

Scale bar 5mm

IMG_1801_-_Copy.JPG 

IMG_1802_-_Copy.JPG 






Edited by TqB 2012-06-05 20:44:56

__________________
Tarquin
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #116 
A quickly polished N. Yorks coast pebble picked up yesterday. I'm provisionally calling it Siphonodendron irregulare - not sure about the species but I can't find anything else with the same number of septa (24 each major and minor).

Scale bar 1cm
IMG_1841_-_Copy_1.JPG 
IMG_1843_-_Copy_1.JPG 


__________________
Tarquin
0
Naze Dave

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,908
Reply with quote  #117 
Thats stunning, thanks for sharing!
Thanks
Dave

__________________
Still Life
0
dinogary

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 1,545
Reply with quote  #118 
nice find tarquin,looks like you did a good job with polish
__________________
Growing old is compulsory, Growing up is optional!
0
Barton Jim

Avatar / Picture

Jurassic Jumper
Registered:
Posts: 173
Reply with quote  #119 
Hi Tqb
That's some amazing coral
Chess, Jim

__________________
You never know what you could find next!!
0
stuart j

Cretaceous Climber
Registered:
Posts: 91
Reply with quote  #120 
Some of these corals are incredibly beautiful Tarquin you must be building up a huge collection 


__________________
   StuartJ
fossils rock!
0
ryanc

Cambrian Rockhound
Registered:
Posts: 973
Reply with quote  #121 
Lovely polished piece - really brings out the structural detail for identification Clap
 

Regards,

 

Ryan
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #122 
Thanks very much everybody, there are always Carb. coral pebbles on the Yorkshire coast when all else fails. I'm interested to pin down which species there are - it's mostly  Siphonodendrons and Syringoporas (at least they're the most obvious), but ID isn't helped when you don't know the source rocks.
I wonder if anyone's ever studied this? - perhaps when looking at glaciation directions?



__________________
Tarquin
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #123 
A bonus from Robin Hood's Bay yesterday (not much around apart from some belemnites I was looking for).

Pity about the fracturing but the detail's  good - after a quick polish, it looks like  Lithostrotion decipiens.

About 9cm across, scale bar in pic 3 is 5mm.
IMG_1873_-_Copy.JPG 

IMG_1879_-_Copy.JPG 
IMG_1880_-_Copy.JPG IMG_1880_-_Copy_2.JPG 



__________________
Tarquin
0
dinogary

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 1,545
Reply with quote  #124 
that is a fantastic specimen tarquin ,,,well spotted
__________________
Growing old is compulsory, Growing up is optional!
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #125 
Thanks, Gary (belatedly)!

Another pebble, Northumberland coast this time, derived from the Namurian Dryburn Limestone (a lateral equivalent of the Great Limestone). I have some others but could really do with some lapidary gear.

Actinocyathus floriformis or laticlavia, still haven't sorted that out.

about 5cms across, central corallite 15 x 20mm.

IMG_1913_-_Copy.JPG IMG_1913_-_Copy_2a.JPG 
IMG_1913_-_Copy_3.JPG 


__________________
Tarquin
0
ryanc

Cambrian Rockhound
Registered:
Posts: 973
Reply with quote  #126 
The colours are amazing! Iron oxides staining the calcite perhaps - they look like flowers of the fossil sea :)
 

Regards,

 

Ryan
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #127 
Thanks, Ryan, I agree about the iron staining, speaking of which here's the Siphonodendron junceum that I've also put on Recent Finds.

Northumbrian coast, probably lower Brigantian.
Corallites 2mm.
IMG_1919_-_Copy_1a.JPG 
IMG_1926_-_Copy_1a.JPG 


__________________
Tarquin
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #128 
Closeups:
IMG_1928_-_Copy_1.JPG 
IMG_1927_-_Copy_2_b.JPG 


__________________
Tarquin
0
tortoise

Cambrian Rockhound
Registered:
Posts: 652
Reply with quote  #129 
Those polished corals are seriously nice Tarquin. That Siphonodendron is beautiful
__________________
Andy

0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #130 
Thanks very much, Andy. Somebody showed me this:
link
on the BGS website a while ago, very similar preservation.



__________________
Tarquin
0
Fiona

Neogene Newbie
Registered:
Posts: 4
Reply with quote  #131 
wow thats reeaallly gorgeous Tarquin! 


Fiona aka moonmoth :-)
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #132 
Thanks, Fiona, great to see you back


__________________
Tarquin
0
Naze Dave

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,908
Reply with quote  #133 
That is incredible, thanks for sharing.
Thanks
Dave

__________________
Still Life
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #134 
Thank you, Dave,it was a pleasant surprise!


__________________
Tarquin
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #135 
Spent a couple of hours grinding and polishing this Weardale Actinocyathus - I like the variation in preservation of adjacent corallites.

Block 110mm across, corallites about 20mm.
IMG_1934_-_Copy.JPG 

IMG_1936_-_Copy.JPG 



__________________
Tarquin
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #136 
Another red pebble, Diphyphyllum ?lateseptatum, picked up a while ago at Redcar.
Not as dramatic as the Siphonodendron two posts ago but still worth a quick polish. (longitudinal section as found)

 pebble 35mm, corallites about 5mm.
IMG_1932_-_Copy.JPG IMG_1932_-_Copy_2a.JPG IMG_1933_-_Copy.JPG 
IMG_1932_-_Copy_3.JPG 


__________________
Tarquin
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #137 
Been looking for one of these for a while - Lithostrotion vorticale (perhaps! - there's a whole group of these which I don't think anyone's sorted out yet ).

Found as an erratic at Redcar yesterday, I believe it's not uncommon further south - I have a bought piece from Holderness which looks like it's from the same bed.

Hardly recognizable as a coral when found apart from a few worn calyx indentations which gave it away - pebble bruising makes the structure practically invisible.

About 14 cm across, corallites up to about 1cm.
IMG_1938_-_Copy_1.JPG 






After some rough grinding to remove the bruising:
IMG_1944_-_Copy.JPG 


Polished:
IMG_1945_-_Copy.JPG 
IMG_1946_-_Copy.JPG 



__________________
Tarquin
0
prep01

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,793
Reply with quote  #138 
oh yes!


__________________
Colin Huller
0
dinogary

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 1,545
Reply with quote  #139 
oh i do like that!!!
__________________
Growing old is compulsory, Growing up is optional!
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #140 
Colin & Gary, thanks! I suspect this stuff is quite common on the coast but often hard to spot - easier when they're wet of course, I've now taken to licking featureless white pebbles...




__________________
Tarquin
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #141 

The lower left corallite on this Northumberland pebble explains the specific  name floriformis although this one might be the somewhat larger Actinocyathus laticlavia.

The coral structure is infilled with clear calcite so you can see into it in the polished surface.

10 cm across, single corallite 2cm.

 IMG_1980_copy_-_Copy.jpg 

IMG_1982_copy_copy.jpg 
 


Edited by TqB 2012-09-10 20:10:22

__________________
Tarquin
0
dinogary

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 1,545
Reply with quote  #142 
tarquin  you have a stunning collection of corals
__________________
Growing old is compulsory, Growing up is optional!
0
Naze Dave

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,908
Reply with quote  #143 
Beautiful yet again.
Thanks
Dave

__________________
Still Life
0
prep01

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,793
Reply with quote  #144 
Nice one!


__________________
Colin Huller
0
SteveD

Avatar / Picture

Neogene Newbie
Registered:
Posts: 12
Reply with quote  #145 
Tarquin, you have some excellent specimens here. I will have to get back to Weardale some time, found a partial trilobite once.


0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #146 
Thanks very much everyone, plenty more to come but I think that Actinocyathus is one of the best looking.

SteveD - I've a few Durham Carboniferous trilobites, some more or less complete but I'm still waiting for a perfect one! - will post some soon, as well as orthocones, spiny brachiopods etc.

I was expecting this 5cm erratic pebble from Redcar to be Lithostrotion of some sort but it isn't - I think it's an unusually small Actinocyathus floriformis, but it could be a Thysanophyllum sp which is related and rather blurs into it.

It's somewhat recrystallised which rather obscures the detail.

(just small enough to cut with a tile saw)
(scale bar 1cm)

IMG_1970_-_Copy.JPG IMG_1965_-_Copy_A.JPG IMG_1968_-_Copy_2_-_Copy.JPG IMG_1969_-_Copy_-_Copy.JPG 



__________________
Tarquin
0
prep01

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,793
Reply with quote  #147 
NICE!


__________________
Colin Huller
0
dinogary

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 1,545
Reply with quote  #148 
wow   i do like that !!!!
__________________
Growing old is compulsory, Growing up is optional!
0
fussy fossiler

Avatar / Picture

Triassic Titan
Registered:
Posts: 438
Reply with quote  #149 
very nice tarquin

regards

sarah

__________________
"Gravy !?, I love gravy its' us northerners favourite soft drink "
0
TqB

Avatar / Picture

Cambrian Rockhound
Registered:
Posts: 2,505
Reply with quote  #150 
Thanks, everyone!
Sarah, there should be loads of different coral pebbles down your way.


__________________
Tarquin
0
Previous Topic | Next Topic
Print
Reply

Quick Navigation:

Easily create a Forum Website with Website Toolbox.



Discussions on fossils, fossil hunting, rocks, locations, and identifying your finds.
(C)opyright 2018 - UKGE Ltd and UK Fossils - Contact us