The study of glacial landforms and deposits is important, as it is difficult to observe processes under modern glaciers and ice-sheets. Thus landscapes and sediments that are the product of present-day glaciation can give insight into processes that occurred during Pleistocene times. This study investigates the genesis of Little Ice Age moraines present in Portage Glacier, South-Central Alaska using till fabric and grain size analysis. The present-day moraine morphology and sedimentology in Portage Glacier Valley reveals the presence of two types of till and moraines. The clast-rich medium to coarse sandy diamicton present in the AD 1852 moraine is interpreted to be a lodgment till indicating that this feature is a Type A push moraine representing glacial advance of Portage Glacier prior to AD 1852. The clast-rich coarse to very coarse sandy diamicton present in the AD 1900 and AD 1922 moraines is interpreted to be a supraglacial melt-out till (ablation till) indicating that these features are ablation moraines representing glacier recession and moraine building in AD 1900 and AD 1922