div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imagea href=https:reader030vdocumentsmxreader030viewer20220204055750688c1a28ab0f07b0ac78html5page1jpg target=_blank img data-url=ocean-floor-comes-ashorehtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Ocean floor comes ashore loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader030vdocumentsmxreader030viewer20220204055750688c1a28ab0f07b0ac78html5thumbnails1jpg width=140 height=200 adivp© 1991 Nature Publishing Groupp div class=annotation div class=annotationTitleanudiv div class=annotationContentsIMAGE UNAVAILABLE FOR COPYRIGHT REASONSdiv divdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imagea href=https:reader030vdocumentsmxreader030viewer20220204055750688c1a28ab0f07b0ac78html5page2jpg target=_blank img data-url=ocean-floor-comes-ashorehtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: Ocean floor comes ashore loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader030vdocumentsmxreader030viewer20220204055750688c1a28ab0f07b0ac78html5thumbnails2jpg width=140 height=200 adivp© 1991 Nature Publishing Groupp div class=annotation div class=annotationTitleanudiv div class=annotationContentsIMAGE UNAVAILABLE FOR COPYRIGHT REASONSdiv divdivdiv class=ts-pagebutton class=gotoPage data-page=3Page 3button div class=ts-imagea href=https:reader030vdocumentsmxreader030viewer20220204055750688c1a28ab0f07b0ac78html5page3jpg target=_blank img data-url=ocean-floor-comes-ashorehtmlpage=3 data-page=3 class=ts-thumb lazyload alt=Page 3: Ocean floor comes ashore loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader030vdocumentsmxreader030viewer20220204055750688c1a28ab0f07b0ac78html5thumbnails3jpg width=140 height=200 adivp© 1991 Nature Publishing Grouppdiv