Abstract: The story of Joseph Smith retrieving gold plates from a stone box on a hillside in upstate New York and translating them into the foundational text of the Restoration is well known among Latter-day Saints. While countless retellings have examined these events in considerable detail, very few have explored the geological aspects involved in this story. In particular, none have discussed in detail the geological materials that would have been required by the Nephite prophet Moroni ca. ad 421 to construct a sealed container able to protect the gold plates from the elements and from premature discovery for some fourteen centuries. This paper reports the outcomes from a field investigation into what resources would have been available to Moroni in the Palmyra area. It was conducted by the authors in New York state in October 2017.
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The hill near Palmyra,1 New York state, in which Moroni buried the plates and from which Joseph Smith retrieved them, has long been popularly known among Latter-day Saints as "Cumorah." This unofficial practice derived from the assumption by many early Book of Mormon believers that this hill marks the location of the final battles between the Lamanite and Nephite armies. The practice remains common today among the general membership. As the Book of Mormon describes the land of Cumorah, its hill, and those wars in some detail, it is evident to [Page 234]the careful reader that the real-world setting was not — indeed could not — have been situated in New York state.2 Accordingly, for clarity throughout this paper, the New York hill where the plates were buried by Moroni is referred to as the "Palmyra hill."
[Page 235]From Mormon's Cumorah to Moroni's Hill
The final, decisive battle bringing about the end of Nephite society took place about ad 385 (recounted in Mormon 6:1–15) around the Hill Cumorah, the same location formerly known as the Hill Ramah, where the Jaredite nation had earlier ended in battle (Ether 15:11). As the leader of his people, Mormon had buried the collected records of his people in the Hill Cumorah, entrusting his abridgement of them to his son Moroni (Mormon 6:6). Mormon died in the ultimate battle, leaving Moroni to protect and even add to the Nephite record while still avoiding the victorious Lamanites as he wandered.
Three and a half decades later (about ad 421; see Moroni 10:1), Moroni ends his writing and prepares to bury the sacred items in a hill. The years of travel had brought him northward to the Palmyra area of upstate New York, [Page 236]where the cooler climate would aid in the preservation of buried materials and where they would be accessible when required in the Restoration.
Realistically, for the three decades of wandering that brought him to the Palmyra area, Moroni could not have carried heavy items such as sizeable rocks in addition to the metal plates, breastplate, sword of Laban, Liahona, and the Urim and Thummim, as listed in the 1829 revelation to the Three Witnesses (Doctrine and Covenants 17:1). By his own account completely alone (Mormon 8:3, 5), we feel safe in concluding that when the time arrived to bury the plates, Moroni was restricted to local materials on hand in the Palmyra area.
A Geological Introduction to the Palmyra Setting
The Palmyra hill is a large glacial drumlin, formed during the last ice age. It belongs to a large region of drumlins that lie between Lake Ontario on the north and New York's Finger Lakes to the south.3 Understanding how the drumlins formed is important to understanding the findings tha...