Question: What is the nationality of the geologist who declared Schoonmaker Reef significant ?

Context paragraphs:
Wilson Reef: Wilson Reef is a small (4.5 ha) coral reef within the Great Barrier Reef complex of Queensland, Australia.  It lies about 30 km north of Cape Melville on the Cape York Peninsula in the habitat protection zone of the Great Barrier Reef Marine Park.  It has some unnamed sand cays which are used by seabirds but no significant islands.  It is named after Peter Wilson, a New Zealander whose ship crashed on the reef in 1927.

Soldiers' Home Reef: Soldiers' Home Reef, also known as Rocky Point, National Military Asylum Reef, or Veterans' Hill is a fossilized coral reef rock formation in Milwaukee, Wisconsin.  The reef formation was discovered by geologist Increase A. Lapham in the 1830s.  It and other fossilized coral reefs that he discovered were the first geological reef formations described in North America, and are among the first described in the world.  This reef was declared a National Historic Landmark in 1993.

James Hall (paleontologist): James Hall (September 12, 1811 – August 7, 1898) was an American geologist and paleontologist.  He was a noted authority on stratigraphy and had an influential role in the development of paleontology in the United States.

Sir Joseph Banks Group Conservation Park: Sir Joseph Banks Group Conservation Park is a protected area located on the Sir Joseph Banks Group in Spencer Gulf in South Australia about 25 km east-northeast of Port Lincoln.  The conservation park of which specific islands had been previously declared as Flora and Fauna Reserves under statutes in force prior to 1972, was proclaimed in 1972 under the "National Parks and Wildlife Act 1972".  It was declared ‘primarily for the conservation of Cape Barren geese (which had suffered severe population declines during the middle of last century, from hunting), and to protect marine mammal habitat’.  As of 1996, the park did not include Spilsby island which is privately owned and ‘lighthouse reserves’ on other islands while the following islands have been added post-declaration - Reevesby Island which was added in 1974 and Dangerous Reef which was added in 1989.  The conservation park was subsequently extended to include the waters within 2 nmi of the shoreline of all islands in the group and Dangerous Reef via a declaration under the "National Parks and Wildlife Act 1972" for the purpose of regulating and managing great white shark berleying activities.  The conservation park is classified as an IUCN Category Ia protected area.

Lord Howe Island Marine Park: Lord Howe Island Marine Park is the site of Australia's and the world’s most southern coral reef ecosystem.  The island is 10 km in length, 2 km wide and consists of a large lagoonal reef system along its leeward side, with 28 small islets along its coast.  In 1999, the waters within three nautical miles of Lord Howe Island (465.45 km) were declared a marine park under the "NSW Marine Park Act" 1997 to protect its unique marine biodiversity, with the park currently being managed by the New South Wales Marine Parks Authority.  Both Lord Howe Island and Balls Pyramid are incorporated within the three nautical miles protected by the state marine park.  The waters from 3 - 12 nautical miles were declared a federal marine park on 21 June 2000, see Lord Howe Island Marine Park (Commonwealth waters).  Both marine parks complement the island's status as a World Heritage Site.

Lindsay Collins: Lindsay Boyd Collins (19 February 1944 – 2 September 2015) was an Australian marine geologist and sedimentologist, a faculty member in the department of applied geology at Curtin University in Western Australia.  He was interested in studying the continental shelf of Western Australia and coral reefs.  Collins was a prominent scholar, he has completed projects on continental shelf mapping of Australian shelves, microbialites and seagrass banks at Shark Bay, and coral reef studies at the Abrolhos, Ningaloo, Scott Reef, the Rowley Shoals and the Kimberley.

Heron Island (Queensland): Heron Island is a coral cay located near the Tropic of Capricorn in the southern Great Barrier Reef, 80 km north-east of Gladstone, Queensland, Australia, and 460 km north-north-west of the state capital Brisbane.  The island is situated on the leeward (western) side of Heron Reef, a fringing platform reef of significant biodiversity, supporting around 900 of the 1,500 fish species and 72% of the coral species found on the Great Barrier Reef.

Hikkaduwa National Park: Hikkaduwa National Park is one of the three marine national parks in Sri Lanka.  The national park contains a fringing coral reef of high degree of biodiversity.  The area was declared a wildlife sanctuary on May 18, 1979, and then on August 14, 1988, upgraded to a nature reserve with extended land area.  The growth of the number of visitors in the next 25 years increased the degradation of the coral reef.  To reduce the effects to the ecosystem, the reef was declared a national park on September 19, 2002.

Turneffe Atoll: Turneffe Atoll, located southeast of Ambergris Caye and Caye Caulker, off the coast of Belize in Central America, 20 mi from Belize City, is one of three atolls of the Belize Barrier Reef, besides Glover's Reef and Lighthouse Reef.  It is approximately 30 mi long and 10 mi wide, making it the largest coral atoll in Belize and in the Mesoamerican Barrier Reef System.  The atoll was officially declared a marine reserve on November 22, 2012.

Schoonmaker Reef: Schoonmaker Reef, also known as Wauwatosa Reef, Schoonmaker Quarry, Raphu Station or Francey Reef is a 425 million year-old fossilized reef in Wauwatosa, Wisconsin.  It was discovered in 1844 by Increase A. Lapham and Fisk Day on the site of a quarry owned by the Schoonmaker Family.  Geologist James Hall declared its significance in 1862.  It was the first ancient reef described in North America, and among the first described in the world.  It is located North of W. State St., between N. 66th St. and N. 64th St. extended, in Wauwatosa.  It was declared a National Historic Landmark in 1997.

Supporting paragraphs: Schoonmaker Reef James Hall (paleontologist)
Answer: American