Document Type

Conference Proceeding

Publication Date


Publication Title

Guidebook, 96th Annual Meeting of the New England Intercollegiate Geological Conference


Cape Ann, because of its proximity to Boston and many universities, has long been a focus of geologic study. Nineteenth century papers that consider mineralogy or petrology of Cape Ann rocks include Prescott (1839), Nichols (1856), Kimball (1860), Gregory (1862), Mudge (1862), Balch (1864), Cooke (1866, 1867), Knowlton (1867), Hyatt (1869, 1871a,b), Hunt (1871), Wadsworth (1878, 1882a,b, 1885), McDaniel (1884), Sears (1888, 1889, 1890a, 1891a,b, 1893a,b, 1894a,b, 1895, 1898), Shaler (1889), Pearce (1893), Penfield and Forbes (1896), and Washington (1898a,b,c, 1899a,b,c,d). More recent studies of note include Wright (1900), Clapp (1921), Warren and McKinstry (1924), Bowen and Schairer (1935), Palache (1950), Toulmin (1964a,b), Dennen (1976, 1981, 1991a,b, 1992), Zen et al. (1983), Goldsmith (1991), Wones and Goldsmith (1991), Hon et al. (1993), Hepburn et al. (1993, 1998, 2004), and Hepburn and Bailey (1998). With this long history of study, Cape Ann offers an unusual wealth of data and opinion to match the extensive, interesting, and beautiful outcrops that occur there, making it a destination of choice for petrologists.

For many years, we have been jointly taking our petrology classes on a one-day field trip to the Cape Ann region to see and discuss igneous rocks in a spectacular setting. We have found this to be a very rewarding experience both for us and for our students. We offer this NEIGC trip to share with others what we think are the best teaching stops, some comments about teaching strategies, diagrams that may be useful for teaching about Cape Ann, and our current understanding of the geologic history of the Cape Ann Plutonic Suite. This is not a trip about new research, although our students have collected data over the years that are included in some of the figures. Instead, it is a chance to look at some great rocks and to discuss the research that others have done in the region beginning in the mid-19th century. G


© John Brady and John Cheney


Peer reviewed accepted manuscript.

Guidebook, 96th Annual Meeting of the New England Intercollegiate Geological Conference, Salem, Massachusetts, B1-B25

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