The phrase "a broad shelf" is correct and usable in written English.
It can be used to describe a shelf that has a wide surface area, suitable for holding various items.
Example: "The living room features a broad shelf that can accommodate books, decorative items, and plants."
Alternatives: "a wide shelf" or "a spacious shelf".
Overshadowed by the towering ranges of Victoria Land, the floor of the Ross Sea extends northward as a broad shelf before plunging into the deeps of the Southeast Pacific Basin along a line from Scott Island to Cape Colbeck.
Kangaroo Island NRS is located 4.5 nm west of Kangaroo Island, at 110 m depth over medium- to coarse-grained carbonate sand with conspicuous large bryozoan and gastropod skeletons, on a broad shelf in the Great Australian Bight, 112 km southwest of Adelaide (population 1.3 million).
The instability leads to development of anticyclonic eddies on the narrow shelf which undergo strong non-linear adjustment at the transition zone from a narrow to a broader shelf.
Detrital facies in the inner shelf pass seaward into a broad carbonate shelf and then into storm-influenced turbidites; whereas marls in the deep shelf and outer basin extend onto the inner-shelf during major highstands.
Doug put a few drops of neat's-foot oil in the pocket of his mitt, folded a ball into it, and placed it on the broad shelf that held shin guards, a catcher's mask, and a cracked Hillerich & Bradsby thirty-four-inch bat that Mr. Kershaw thought could be glued.
It is a broad submarine shelf covered by shallow, warm seawater.
Along the northwest side of the basin toward the mainland is a broad, shallow shelf as wide as 150 miles (240 km).
Downslope, lazy rivulets of lava are plopping into the boiling ocean, adding to a broad, unstable shelf of new black coastline.
In contrast, the mid tooth expands into a broad lingual shelf that is anchored to the jaw with a robust circular base (Fig. 1, inset).
A broad, shallow shelf extends up to 150 miles (240 km) in width between the mainland and the northwestern side of the basin and includes the Gulf of Tonkin and Taiwan Strait.
Depositional cycles similar to those of eastern North America can be recognized in Europe, but distribution of those sediments is confined to small isolated basins instead of a broad cratonic shelf.
