49 episodes

This podcast starts at the beginning of Earth's prehistory and works forward through time. Bedrock will explore the first 90% of Earth’s past, a time known as the Precambrian Era. Before humans, before dinosaurs… there was the Precambrian.
The Earth was an incredibly alien world, but not a dead one.
Along the way, you will build a mental toolkit to see the world like a geologist. You will never look at a mountain, the moon, or pond scum in quite the same way again.

Welcome to Bedrock.
For transcripts, visuals, and references, check out https://www.bedrockpodcast.com

Bedrock: Earth's Earliest History Dylan Wilmeth

    • Science
    • 5.0 • 1 Rating

This podcast starts at the beginning of Earth's prehistory and works forward through time. Bedrock will explore the first 90% of Earth’s past, a time known as the Precambrian Era. Before humans, before dinosaurs… there was the Precambrian.
The Earth was an incredibly alien world, but not a dead one.
Along the way, you will build a mental toolkit to see the world like a geologist. You will never look at a mountain, the moon, or pond scum in quite the same way again.

Welcome to Bedrock.
For transcripts, visuals, and references, check out https://www.bedrockpodcast.com

    35: The Man in the Moon

    35: The Man in the Moon

    How did the Man in the Moon form? What does the Moon's Far Side look like?
    Today, we'll learn about the most visible remnant of the ancient world- the pattern of dark lunar rocks that stares down on us each night. On the way, we'll hitch a ride with a flying fax machine, play a game with crystals in magma, and learn why bananas are slightly radioactive (and why that doesn't really matter).
    Extra Credit: Try to send me a fax, or just eat a banana.

    • 24 min
    34: Bombardment

    34: Bombardment

    When did the Moon's craters form? Can they tell us any stories about the ancient Solar System?
    Today, we'll learn some early explanations for lunar features, meet a "lunatic asylum" of planetary geologists, and learn how the larger planets might have bullied their smaller neighbors.
    Extra Credit: Watch Apollo 13, or The Right Stuff.

    • 22 min
    33: A Thin Line

    33: A Thin Line

    What are the oldest disputed fossils on Earth? Why are they disputed?
    Today, we wrap up our tour of Nuvvuagittuq in northern Quebec, 3.8 billion years ago, March 3rd on the Earth Calendar. In 2017, microscopic rusty threads were discovered inside these rocks, thinner than a human hair. Were they bacteria, or something else entirely? Stay tuned to find out!
    Extra Credit: Learn how to make a chemical garden, or find a piece of chert, flint, jasper, agate, or onyx.
    Common Descent Interview: https://youtu.be/amQ9rntfKV0?feature=shared

    • 25 min
    32: Pumping Iron

    32: Pumping Iron

    Where does humanity get most of its' iron, and what do these rocks tell us about the ancient Earth?
    Today, we'll learn about banded iron formations, the backbone of the modern steel industry an important stop in the search for early life and oxygen, and a rock that is impossible to make today. It's rare to find a rock as important to both economics and research. Along the way, we'll take a breath of fresh air, meet orange pond scum in a forest stream, and find a dagger carved from a meteorite.
    Extra Credit: Find as many steel objects as possible around you, or search for bog iron in a local swamp.

    • 26 min
    31: Trench Warfare

    31: Trench Warfare

    What are Earth's oldest volcanic rocks, and how did they form?
    Today, we'll explore the seafloor 3.8 billion years ago through dark basalt rocks in Nuvvuagittuq, northern Quebec. Along the way, we'll earn a green belt in geology, rest our heads on volcanic pillows and journey to the deepest spot in the modern ocean.
    Extra Credit: Try to find dark black basalt in a building or countertop near you.

    • 20 min
    30: Alternative Canadian Rock

    30: Alternative Canadian Rock

    What's the next step after the oldest rock on Earth?
    Today, we'll move the story forward 200 million years and 1,000 miles.
    The time: 3.8 billion years ago... or maybe much older (March 3 on the Earth Calendar).
    The place: Nuvvuagittuq (noo-voo-ah-git-took), Quebec, Canada, in the lands of the Inuit.
    In this episode, we'll learn how this seaside outcrop was found and the ongoing debate about its' exact age. Depending on who you talk to, these are either the second-oldest rocks on Earth, or almost as old as the Earth itself.

    • 20 min

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