- Distinguish between seamount and island. [1 mark]
- Using Google Maps (or a similar mapping capability) in satellite view, locate the New
England Seamounts in the Atlantic Ocean:
a. Estimate the distance between the Bear and Nashville seamounts. [1 mark]
b. Using this view, or NOAA’s map view here, estimate the trend of these
seamounts as a relative compass direction. [1 mark] - Using the NOAA case study here, for these Atlantic Ocean Basin mountains and
seamounts state the approximate:
a. Ages for each of the Monteregian Hills, the New England Seamounts, the Corner
Rise Seamounts, and the Great Meteor Group. [2 marks]
b. Water depth for a mountain or seamount in each of the Monteregian Hills, the
New England Seamounts, the Corner Rise Seamounts, and the Great Meteor
Group. (Note: An annotated version of the relevant graph from the NOAA study
MUST be included as a part of your submission.) [2 marks, -5 marks if annotated
graph is absent.] - Are the trend and age estimates for the Monteregian Hills, the New England Seamounts,
the Corner Rise Seamounts, and the Great Meteor Group, consistent with a
hotspot-based narrative? Discuss. [4 marks] - Provide a geologically oriented sketch that accounts for a stationary hotspot and moving
plates. Based on your sketch, and the above narrative, what must be the case for the
location of the Mid-Atlantic Ridge relative to the hotspot? [4 marks] - Using your map estimate from Question 2(a) for the distance between the Bear and
Nashville seamounts, along with age estimates for each of the seamounts from the
NOAA case study, estimate the implied rate of plate motion in cm/yr. [3 marks]
© L. I. Lumb - Sharing prohibited. Violators subject to legal/academic consequences. 1 - Using Google Maps (or a similar mapping capability), determine the distance from the
Bear Seamount to Montreal, Quebec. Submit a screenshot of your estimate. [1 mark] - Using the age-distance relationship deduced in Question 6 for the New England
Seamounts, estimate the age of Mount Royal in Ma - assuming that the hotspot
hypothesis applies to the New England Seamounts and the Monteregian Hills. [4 marks] - From geochronological dating methods, suppose the age of Mount Royal is estimated to
be 122 Ma. Deduce the percentage difference between this estimate and the one
obtained above here in Question 8. [2 marks] - Do the New England Seamounts or the Corner Rise Seamounts exhibit greater relief?
Provide quantitative estimates to support your answer. [2 marks] - Estimate the rate of seafloor subsidence in m/Ma (metres per million years) by
comparing the New England Seamounts with the Corner Rise Seamounts. Hint: Start
with a depth-age plot. [5 marks] - Estimate the longitude of Seamount Z from Figure 1 below. (Note: An enlarged version
of this figure is available here.) [1 mark] - Using NOAA’s distance calculator here, estimate the distance between Seamount Z and
a Corner Rise Seamount. (Note: You will need to make use of Google Maps to estimate
the latitude and longitude of a Corner Rise Seamount. You may assume that Seamount
Z and the Corner Rise Seamount you choose have the same latitude.) [1 mark] - Estimate the relative (to the Corner Rise Seamount you chose) and absolute age of
Seamount Z. (Note: Assume that the hotspot hypothesis can be extended to apply to
Seamount Z.) [3 marks] - Estimate the depth of the sea floor at Seamount Z relative to MSL. [3 marks]
- Submit your annotated version of Figure 1 below. Your version should include any
annotation required to answer any of the questions in this Part. [-5 marks for NOT
submitting your annotated version of Figure 1 - no exceptions]
[Questions 1-16: 40 marks]
Sample Solution