Click to enlargeThis section includes Mid-Atlantic Ridge rock slurry (diverging plates), Costa Rican accretionary prism (subducting plates)and Snowball Earth. You might find some K-T Band here and in the "Crust and Dust" section. More detail at "Joan Lederman's Blog".

Some scientists think, and National Geographic confirms that 635 million years ago Earth was covered by ice or slush.

The items on this page are partly glazed with Namibian rock powder given to me by Bernhard Peucker-Ehrenbrink who gave me this link to learn about the sampling and the science.

Do an internet search to learn for yourself or follow this pointer: This Dynamic Planet Map about global volcanism and plate tectonics thanks to NOAA, Smithsonian and U.S. Naval Research Lab.

If you click on an image you'll get more views and larger images. Currently available :

 





Snowball Earth
Snowball Earth

8.75" x 4"

Says, "Snowball Earth a time and a place when 635 million years ago global glaciation says this melted Namibian rock." The rock slurry was applied thickly inside and thinly outside. The stoneware clay interacted with clay during firing and colored the glaze. Rim and foot of glaze assembled from refined materials.


Availability: Usually ships in 2-3 business days

BL-617US$575.00
Push/Pull and Snowball Earth
Push/Pull and Snowball Earth

8.5" x 2"

Center of seag-lass framed by speckled brown area of K-T Band framed by chattered area of Mid-Atlantic Ridge rock slurry. Rim next to words is Namibian rock that, reportedly, proves glaciation at equator 600 to 700 million years ago.


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FP-67US$575.00
White on White on White (Fixed Dripe)
White on White on White (Fixed Dripe)

Area under words is the Namibian rock, dripping and branching as it moves over the porcelain clay. Interior is shiny white, top exterior is matte white. Sea-glass dimple in lid.

Reduced price because glaze dripped and I filled an area with epoxy putty.


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FU-49US$175.00
Galapagos, Red Sea, Snowball Earth, M.A.R. : Hot/Cold
Galapagos, Red Sea, Snowball Earth, M.A.R. : Hot/Cold

13.5" wide x 2.75" high

Band of speckled warm-white on interior and exterior is Namibian rock that is evidence that Earth was fully glaciated about 700 million years ago. Red Sea is in the brown shiny glaze, lip of Galapagos and the chatter pattern is Mid-Atlantic Ridge rock slurry. Two fish in center, carved as a stamp by Alan Steinbach.


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FB-6US$450.00
Rocks Flowing, Once Tumbled as Ice Melted, Now from Fire
Rocks Flowing, Once Tumbled as Ice Melted, Now from Fire

13" x 3.25"

So many stories! Even the green glass center had been red glass before firing! (must have been the basalt granules causing a local reduction?) Transformation.

Says: Earth covered by ice 635 million years ~ still spinning ~ hard crust around a molten core. HERE: basalt and glass center framed by subducting residue, spreading crust, "ALL" mud and Namibia (arrow points to rock powder on the rim).

The back is "ALL" (dips into buckets from north, south, east, west plus siliceous and carbonate materials) applied thinly.

Glaze on rim that's matte white and green, assembled from refined materials.


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SEA-14US$875.00
What Sounds Then?  Did Waves Lap Ashore & Where Were Shores?
What Sounds Then?  Did Waves Lap Ashore & Where Were Shores?

11.75" x 3.75"

Says, "Snowball earth 635 million years ago global glaciation .... says this melted slurry from Namibian rock layers. What sounds then."

Interior patterns is from how this rock slurry melted and flowed during firing. Center of seaglass. Exterior glaze broke away from clay surface reminding us how ice floes collect and separate. Shiny and matte whites are glazes assembled from refined materials.


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SE-21Price: US$795.00 US$400.00
Namibian Rock on Stoneware
Namibian Rock on Stoneware

5" x 3.5"

Speckled exterior is the Snowball earth rock. Interior white assembled from refined materials. Seaglass thumbwell.


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MG-032-4US$75.00
Namibian Rock on Porcelain
Namibian Rock on Porcelain

4.5" x 3"

Interior is Namibian rock. Exterior is glaze assembled from refined materials. Click several times to read largest available image of exterior views.


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BL-822US$160.00
When Rocks Melt & Tell Stories About Ice
When Rocks Melt & Tell Stories About Ice

11" x 1.75"

Says, "Snowball Earth, a place and a time. Here, melted Namibian rock layers report global glaciation 635 million years ago." That's the greenish gray area between the center of seaglass and the rim of traditional glaze. Melted stone dust from the Namibian rock.


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PLSE-2Price: US$600.00 US$450.00
Namibian Rock on Stoneware
Namibian Rock on Stoneware

4.25" x 3.25"

Exterior mottled area is rock slurry glaze influenced by merging of metallic oxides in the clay with the Snowball Earth sample during firing. (On porcelain clay the same sample might be white.) Interior shiny white assembled from refined materials.

CP-106
Namibian Rock, Nanofossil Ooze, Crust & Dust
Namibian Rock, Nanofossil Ooze, Crust & Dust

5.5" x 4"

Bron the top down: a sprinkling of foraminiferal ooze from Cretacious time, Mid-Atlantic Ridge slurry, K-T Band dust-laden sediment, and "Snowball Earth" story told by Namibian rock that melted and flowed into a glaze assembled from refined materials.


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VS-54Price: US$375.00 US$187.50
Four Whites
Four Whites

5.25" x 2"

Slightly translucent porcelain. Interior is the Snowball Earth glaze that flows some and becomes granular a bit with a few pinholes. Matte and shiny white glazes assembled from refined materials.


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BL-61US$195.00
Snowball Earth
Snowball Earth

11" high x 7.5" wide

Says, "Mixed muds and rock powders from north, south, east and west. Time spaces blurred as we spin, all one in spirit." Namibian rock melted in the shoulder and flowed into the matte white glaze below.

Interior white glaze assembled from refined materials. Seaglass in center of lid.


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SE-6US$475.00
This Dynamic Planet
This Dynamic Planet

14" x 1.5"

Says: Center of glass and gold framed by Earth crust slurry melted framed by "ALL" layers mixed from north, south, east, west framed by 945' south 17545'west & "Snowball Earth". (Amazing roll of the Snow-Ball earth material as it encroaches but does not overflow onto the writing.)

The back is glazed with the same Lau Basin material whose coordinates are specified on the front.

There is a photo of the piece before firing that shows the pile of gold leaf flakes sprinkled atop the seaglass center.


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SEA-13US$2,500.00
Inside Molten Ice on Surface
Inside Molten Ice on Surface

6" x 2"

Glass center framed by Earth crust slurry from Mid-Atlantic Ridge on chattered area surrounded by Namibian rock from a time named Snowball earth. Rim and back are glazes assembled from refined materials. A friend named this series "Reverse fried ice cream".


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PBL-18US$625.00
600 Million Years & 65 Million Years
600 Million Years & 65 Million Years

15" x 7"

Dripping rocks!

Shoulder from the Cretacious Tertiary Boundary, when dinosaur-killing cloud of asteroid dust settles around the globe. It's this iridium that helps validate theories that Earth was covered with ice 600 million years ago. The Namibian rock from that era is slurry applied to the body of the pot here, named "Snowball Earth". Interior and exterior matte white (near base) are glazes assembled from refined materials. The rock slurry that rolled and beaded up during firing fascinates me and evokes curiosity about the sounds of whatever it was back then that lapped against shores (wherever THEY were back then).


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SEV-106US$975.00
Snowball Earth ~ Namibian Rock
Snowball Earth ~ Namibian Rock

4.75" x 2.5"

On porcelain clay is the purest sample labeled "uber fabulous" by the geologist who gave me the ground rock that is melted into white rivulet glaze here. Rim and foot assembled from refined materials. Seaglass center.


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BL-103US$475.00
Feathers in Deep Time
Feathers in Deep Time

11" x 2.25"

On porcelain clay says, "A white marble, a Snowball Earth, spinning above a molten core while continents drift and asteroid dust scatters and settles. Namibia, M.A.R. [Mid-Atlantic Ridge], Space."

White speckled area framing center of sea-glass is the Namibian rock. Next to it is the feather-shaped area stained with rock slurry from drillings into the crust of Earth. Speckled area outside of the band of words is the K-T Band sediment. Lavender glaze assembled from refined materials.


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FP-68US$1,775.00
Rocks and Bones
Rocks and Bones

5.75" high x 5" wide

Namibian rock is the white exterior glaze--there are no bones except I used the word because the porcelain clay seems like bones to me. The hardness, the sound. Interior glaze assembled from refined materials. Gold leaf applied after firing.


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FU-48US$750.00
Vast Space Deep Time ~ Two Rocks and a MUD
Vast Space Deep Time ~ Two Rocks and a MUD

7" high x 5" wide

Wide K-T Band area at shoulder wows me with how it looks like a circulating dust band. I apply the sediment evenly and what happens after that is a gift from the fire--this one has been well-blessed.


Availability: Usually ships in 2-3 business days

FU-50US$675.00
Snowball Earth on Stoneware
Snowball Earth on Stoneware

4.5" x 3.5"

Exterior bottom mottled glaze is the Namibian rock that reports Snowball earth. Interior and lip are white assembled from refined materials.


Availability: Usually ships in 2-3 business days

CP-274US$60.00