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  Abraham Ortelius know as the dutch map maker had the idea of all the continents being together as one.
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  Said the every layer was older then the one above it
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  His law proposed that each rock layer campared each rock above and below. This showed that gratie was formed from cooling rock, not water.
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  Was the first to introduce the continental drift Theory but was shot down by the lack of evidence.
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  Was know for the seafloor spreading.
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  He reseacherd the plants and organims that were similar. They were separated by great oceans.
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  Was known for the convetion in the mantel. Heat air rises Cool air sinks.
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  His discovery led to him submerged and curisouley of flat-topped mountains.
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  His theory was that lithosphere was divided into donzen frozen plates that move.