According to a long-standing principle of the geosciences, that of superposition, the oldest layer within a sequence of strata is at the base and the layers are progressively younger with ascending order.
The relative ages of the rock strata deduced in this manner can be corroborated and at times refined by the examination of the fossil forms present.
Our series of true dating stories continues with today’s essay by Jen Doll. Why was it that being clever and sarcastic and keeping people on their toes was more “acceptable” than asserting what you wanted and letting the possible dates sort themselves into those who wanted the same things, and those who would walk away and wish you well? This idea of knowing what you wanted and actually saying it, it was scary — but it resonated. I wanted someone who knows himself, a good driver (I’ve ridden with too many bad ones), a person who was aligned with me politically.
After going through a rough break up, she turned to a therapist for support. For so long, I’d accepted the guys who liked me first, who seemed like they might get me , and I’d tried to make myself fit around them, to make us work. I also bragged about being able to ski on one ski — sometimes you’ve got to be a little bit funny while also tooting your own horn. Jen Doll has written for The Atlantic, Elle, New York Magazine, The New York Times Book Review and other publications.
In this diagram, sections A and B represent rock layers 200 miles (320 km) apart.
Their ages can be established by comparing the fossils in each layer.
Or, more accurately, first, a younger male friend commandeered my Tinder account (he agreed with my therapist wholeheartedly) and then I changed it still more, because dating, like life, is something of a group effort sometimes.
It took a week and a few glasses of wine but I did it.
In spite of this deductive approach to interpreting natural events and the possibility that they might be preserved and later observed as part of a rock outcropping, little or no attention was given to the history—namely, the sequence of events in their natural progression—that might be preserved in these same rocks.
, a seminal work that laid the essential framework for the science of geology by showing in very simple fashion that the layered rocks of Tuscany exhibit sequential change—that they contain a record of past events.
This required that the Earth be conceived of as a static, unchanging body, with a history that began in the not too distant past, perhaps as little as 6,000 years earlier, and an end, according to the scriptures, that was in the not too distant future.
This biblical history of the Earth left little room for interpreting the Earth as a dynamic, changing system.
With the exception of a few prescient individuals such as Roger Bacon (Leonardo da Vinci (1452–1519), no one stepped forward to champion an enlightened view of the natural history of the Earth until the mid-17th century.