1 geologic history
DESCRIPTION
TRANSCRIPT
![Page 1: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/1.jpg)
GEOLOGIC HISTORY OF THE GULF OF MAINE
![Page 2: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/2.jpg)
The Gulf of Maine began forming roughly 190 million years ago when the supercontinent Pangea started to break up.
190 million years ago
Early Formation of the Gulf of Maine
![Page 3: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/3.jpg)
The Gulf of Maine began forming roughly 190 million years ago when the supercontinent Pangea started to break up.
190 million years ago
Early Formation of the Gulf of Maine
Keep an eye on the Gulf of Maine as it falls into its modern position.
![Page 4: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/4.jpg)
The Gulf of Maine began forming roughly 190 million years ago when the supercontinent Pangea started to break up.
190 million years ago
Early Formation of the Gulf of Maine
![Page 5: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/5.jpg)
The Gulf of Maine began forming roughly 190 million years ago when the supercontinent Pangea started to break up.
190 million years ago
Early Formation of the Gulf of Maine
![Page 6: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/6.jpg)
190 million years ago
The Gulf of Maine began forming roughly 190 million years ago when the supercontinent Pangea started to break up.
Early Formation of the Gulf of Maine
![Page 7: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/7.jpg)
190 million years ago
Roughly 18,000 years ago, the Laurentide Ice Sheet advanced on the Gulf of Maine, bulldozing rocks into the ocean that it had collected on its route through Canada.
18,000 years ago
An Ice Sheet Carves out the Gulf of Maine
![Page 8: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/8.jpg)
190 million years ago
Roughly 18,000 years ago, the Laurentide Ice Sheet advanced on the Gulf of Maine, bulldozing rocks into the ocean that it had collected on its route through Canada.
18,000 years ago
An Ice Sheet Carves out the Gulf of Maine
![Page 9: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/9.jpg)
190 million years ago
Roughly 18,000 years ago, the Laurentide Ice Sheet advanced on the Gulf of Maine, bulldozing rocks into the ocean that it had collected on its route through Canada.
18,000 years ago
An Ice Sheet Carves out the Gulf of Maine
![Page 10: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/10.jpg)
190 million years ago
Roughly 18,000 years ago, the Laurentide Ice Sheet advanced on the Gulf of Maine, bulldozing rocks into the ocean that it had collected on its route through Canada.
18,000 years ago
An Ice Sheet Carves out the Gulf of Maine
![Page 11: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/11.jpg)
190 million years ago
18,000 years ago
The Laurentide Ice Sheet retreated completely from the Gulf of Maine roughly 13,000 years ago…
13,000 years ago
![Page 12: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/12.jpg)
190 million years ago
18,000 years ago
…revealing the landscape and seafloor we see today.
13,000 years ago
![Page 13: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/13.jpg)
190 million years ago
18,000 years ago
13,000 years ago
How did the ice sheet shape the Gulf of Maine?
![Page 14: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/14.jpg)
190 million years ago
18,000 years ago
13,000 years ago
How did the ice sheet shape the Gulf of Maine?
•When the ice sheet melted away, it released mountains of rocks that it had bulldozed along its route through North America.
![Page 15: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/15.jpg)
190 million years ago
18,000 years ago
13,000 years ago
How did the ice sheet shape the Gulf of Maine?
•When the ice sheet melted away, it released mountains of rocks that it had bulldozed along its route through North America.
•These underwater mountains, or banks, surround the Gulf of Maine and define the local environment.
![Page 16: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/16.jpg)
190 million years ago
18,000 years ago
13,000 years ago
How did the ice sheet shape the Gulf of Maine?
•When the ice sheet melted away, it released mountains of rocks that it had bulldozed along its route through North America.
•These underwater mountains, or banks, surround the Gulf of Maine and define the local environment.
•For example, nutrient-rich water from the Arctic tends to swell and concentrate over George’s Bank, flooding the area with nutrients.
•When the ice sheet melted away, it released mountains of rocks that it had bulldozed along its route through North America.
•These underwater mountains, or banks, surround the Gulf of Maine and define the local environment.
•For example, nutrient-rich water from the Arctic tends to swell and concentrate over George’s Bank, flooding the area with nutrients.
![Page 17: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/17.jpg)
190 million years ago
18,000 years ago
13,000 years ago
How did the ice sheet shape the Gulf of Maine?
•When the ice sheet melted away, it released mountains of rocks that it had bulldozed along its route through North America.
•These underwater mountains, or banks, surround the Gulf of Maine and define the local environment.
•For example, nutrient-rich water from the Arctic tends to swell and concentrate over George’s Bank, flooding the area with nutrients.
•When the ice sheet melted away, it released mountains of rocks that it had bulldozed along its route through North America.
•These underwater mountains, or banks, surround the Gulf of Maine and define the local environment.
•For example, nutrient-rich water from the Arctic tends to swell and concentrate over George’s Bank, flooding the area with nutrients.
•As a result, George’s Bank is one of the most productive fisheries in the Gulf of Maine and is crucial to the Maine fishery business.
![Page 18: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/18.jpg)
What two major geologic events helped shape the Gulf of Maine?
![Page 19: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/19.jpg)
The Gulf of Maine began forming when the supercontinent Pangea started to break up.
190 million years ago
What two major geologic events helped shape the Gulf of Maine?
![Page 20: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/20.jpg)
The Gulf of Maine began forming when the supercontinent Pangea started to break up.
190 million years ago
18,000 years ago
North American glaciers encroached on the Gulf of Maine during the last ice age, revealing the modern underwater landscape that shapes the Gulf of Maine today.
What two major geologic events helped shape the Gulf of Maine?
![Page 21: 1 geologic history](https://reader033.vdocuments.site/reader033/viewer/2022051512/5407e2e68d7f7288088b4fdf/html5/thumbnails/21.jpg)
The Gulf of Maine today.