A Trip to the Joggins Fossil Cliffs in Nova Scotia

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Family vacation with the Duffs always includes some geological sights.  In 2007 we visited Prince Edward Island and had a wonderful time but the there just wasn’t enough geology there to satisfy my curiosity so I took us on a 2 hour detour in Nova Scotia.  After a lot of “are we there yets” and […]

NH Notes: Fossil Wasp Cocoons in Dinosaur Eggs – Evidence of a Complex Ecology

Several fossilized wasp cocoons visible here in this titanosaurus egg.  Image:  SARZETTI (co-author of the paper describing this finding)

What happened to huge dinosaur eggs that were either abandoned or broke prematurely?  You might think that this is a question that is impossible to answer, but there have been dinosaur eggs that have been discovered with intriguing evidence of scavenging of various forms.   I recently came across a report from 2011 that I […]

The Worlds Largest Rock Tumbler and the Age of the Earth

Atacama-wind-erosion-rock

Last year I wrote about the strange rubbing boulders of the Atacama desert.  In that post I relayed the story of these strange large boulders that are found scattered in a high valley in the Atacama desert.  That desert is one of the driest places on earth with the area that these particular boulders lie […]

Weekend Potpourri: Salt Chronometer Update, Ken Ham Blog, and Gen X Creationists

potpory

It has been a while since I’ve been able write. There has been quite a bit of news the last two weeks and I thought I would briefly comment on a few items that are relevant to my most recent posts: The Salt Chronometer Since I published my series on the salty seas (Part I, […]

Lake Suigetsu and the 60,000 Year Varve Chronology

Here is an example of an ash layer from one of the cores of Lake Suigetsu.  This ash layer is more than 1cm thick (the varves are less than 1mm each) and is composed almost almost pure volcanic glass. The purity suggests that it resulted from ash falling from the sky into this very placid lake and quickly sinking to the bottom.  This image is from the Suigetsu web page:

Layers of sediment underlying some lakes can be read like rings in a tree. These layers called varves (alternating layers of sediments and/or organic material) and the precise counting of one that represent annual layers have been used to test and calibrate radiocarbon dating methods.   A few weeks ago there was a report on additional […]

The Toba Super Eruption and Polar Ice Cores

Ice-Core-Greenland

A few months ago I wrote about the significance of recent findings regarding the Toba super volcano in Indonesia (The Toba Super Eruption: A non-Flood Catastrophe – the Artifacts Say Yes).  Briefly,  I explained that the Toba volcano caldera produced the largest eruption in the past 100,000 years releasing an estimated 2800 cubic kilometers of […]

Creation Debate in the Adventist Church

bull understanding genesis adventist perspective

A reader recently brought the articles linked below from a Seventh Day Adventist (SDA) website to my attention.  I found them interesting not just because they present a good overview of the challenges that the Greenland ice cores present to young earth creationism but because it raised my own awareness about current discussions in the […]

The Salty Sea Part III: Are the Oceans Getting Saltier Over Time?

sea-salt-evaporated-production

This is part of  series of posts on the Sea Salt Chronometer. Other posts in this series are: The Salty Sea and the Age of the Earth: Confirmation Bias The Salty Sea Part II:  A Young Earth Salt Chronometer? The Salty Sea Part III: Are the Oceans Getting Saltier Over Time? The Salty sea Part […]

The Salty Sea and the Age of the Earth, Part I – Confirmation Bias

salt-crystals

According to young earth creationists, there isn’t enough salt in the oceans if the earth is old. Recent references to this argument have spurred me to look a little closer at how it is being used today. What I find is that it appears to have only a purely rhetorical use as the actual data about the ocean’salinity suggests that the amount of salt in the sea is a useless tool for indicating the earth is old or young.

Geological Context II: Neanderthals and the Italian Supervolcano

A cave with sedimentary deposits on its floor.  Exposure to the atmosphere allows for sediments to be carried into the cave by wind, tracked in by animals but most material is feces from bats and other organisms that make temporary homes here including humans.  This particular cave on ?? island of Indonesia is where the skull and some bones of the so-called human "hobit" fossils were found 5.9 meters below the current surface in a pit seen in this picture.  These sediments also contain volcanic ash layers that allow ages to be assigned to different depths.

There are thousands of sites with either human remains or artifacts (stone tools usually) that are known across southern Europe and many are found in locations where they are found in layers stacked on top of each other like in caves or flood plain locations along rivers. But, the exact pattern of Neanderthal and modern human population migrations and changes is not my main interest.

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