GEOMORPHOLOGY AND
LANDFORMS
L.A MHLANGA 201574545
WHAT IS GEOMORPHOLOGY?
WHAT IS GEOMORPHOLOGY?
• DERIVED FROM A GREEK WORD “GEO” WHICH IS EARTH AND “MORPHO” WHICH IS FORM.
THEREFORE GEOMORPHOLOGY IS A DISCOURSE ON EARTHS FORM, IT IS SCIENTIFIC STUDY
OF LANDFORMS AND THE PROCESSES THAT SHAPE THEM.
IMPORTANCE OF GEOMORPHOLOGY
• TO UNDERSTAND GEOMORPHOLOGICAL PROCESSES OF VARIOUS ENVIRONMENT.
• TO DETECT NATURAL AND ENVIRONMENTAL HAZARDS EFFICIENTLY, E.G.
EARTHQUAKE, FLOODING, LANDSLIDE, TSUNAMI, VOLCANISM ETC.
• TO IDENTIFY VARIOUS LANDFORM FEATURES AND LANDSCAPES
• TO IDENTIFY VARIOUS LANDFORM FEATURES FROM SATELLITE IMAGES
• COASTAL AND RIVER RESEARCH
• VULNERABILITY STUDIES
TYPES OF GEOMORPHOLOGY
• PHYSICAL GEOMORPHOLOGY
• CHEMICAL GEOMORPHOLOGY
• BIOLOGICAL GEOMORPHOLOGY
WHAT ARE THE PROCESSES WORK BEHIND
THE LANDFORMS?
• THE PROCESSES ARE DETERMINED BY SUCH NATURAL ENVIRONMENTAL
VARIABLES AS GEOLOGY, CLIMATE, VEGETATION AND BASE LEVEL, TO SAY
NOTHING OF HUMAN INTERFERENCE.
• THE PHYSICAL AND CHEMICAL INTERACTIONS BETWEEN THE EARTH'S SURFACE
AND THE NATURAL FORCES ACTING UPON IT TO PRODUCE LANDFORMS.
• THE PROCESS RESPONSIBLE FOR THE FORMATION AND ALTERATION OF THE
EARTH'S SURFACE.
GEOMORPHIC PROCESSES
• THE GEOMORPHIC PROCESSES INCLUDE;
• EROSION
• TRANSPORTATION
• DEPOSITION
EROSION
• OCCURS WHEN RIVERS ERODE OR
WEAR AWAY THE LAND SURFACE
OVER WHICH THEY ARE FLOWING
• THE ROCK PARTICLES WHICH ARE
WORN AWAY FROM THE LAND
SURFACE ARE CALLED SEDIMENTS
TRANSPORTATION
• IS A PROCESS WHERE THE SEDIMENT PRODUCED BY EROSION IS CARRIED AWAY
DOWNSTREAM BY THE RIVER.
DEPOSITION
• HAPPENS WHEN THE SEDIMENT MAY SETTLE EITHER ON THE RIVER
BED.
• WHERE THE WATER FLOWS MORE SLOWLY AS IN THE FLOOD PLAIN,
OR EVENTUALLY ON THE SEA BED.
REFERENCES
• NAZIR HOSSAIN, M.D. (2016) INTRODUCTION TO GEOMORPHOLOGY. AVAILABLE ON SLIDESHARE
HTTPS://WWW.SLIDESHARE.NET/MDNAZIRHOSSAIN1/INTRODUCTION-TO-GEOMORPHOLOGY
(ACCESSED 13 SEPTEMBER 2017)
• G-MEDHIN, N. (2012) GEOMORPHOLOGY AND LAND SYSTEM. AVAILABLE ON SLIDESHARE
HTTPS://WWW.SLIDESHARE.NET/NIGATUGMEDHIN/GEOMOROPHOLOGY-PRESENTATION (ACCESSED
13 SEPTEMBER 2017)
• IRABBETTES, I. (2007) GEOMORPHIC PROCESSES. AVAILABLE ON SLIDESHARE
HTTPS://WWW.SLIDESHARE.NET/LRABBETTS/GEOMORPHIC-PROCESSES (ACCESSED 13 SEPTEMBER
2017)

Geomorphology and landforms

  • 1.
  • 2.
  • 3.
    WHAT IS GEOMORPHOLOGY? •DERIVED FROM A GREEK WORD “GEO” WHICH IS EARTH AND “MORPHO” WHICH IS FORM. THEREFORE GEOMORPHOLOGY IS A DISCOURSE ON EARTHS FORM, IT IS SCIENTIFIC STUDY OF LANDFORMS AND THE PROCESSES THAT SHAPE THEM.
  • 4.
    IMPORTANCE OF GEOMORPHOLOGY •TO UNDERSTAND GEOMORPHOLOGICAL PROCESSES OF VARIOUS ENVIRONMENT. • TO DETECT NATURAL AND ENVIRONMENTAL HAZARDS EFFICIENTLY, E.G. EARTHQUAKE, FLOODING, LANDSLIDE, TSUNAMI, VOLCANISM ETC. • TO IDENTIFY VARIOUS LANDFORM FEATURES AND LANDSCAPES • TO IDENTIFY VARIOUS LANDFORM FEATURES FROM SATELLITE IMAGES • COASTAL AND RIVER RESEARCH • VULNERABILITY STUDIES
  • 5.
    TYPES OF GEOMORPHOLOGY •PHYSICAL GEOMORPHOLOGY • CHEMICAL GEOMORPHOLOGY • BIOLOGICAL GEOMORPHOLOGY
  • 6.
    WHAT ARE THEPROCESSES WORK BEHIND THE LANDFORMS? • THE PROCESSES ARE DETERMINED BY SUCH NATURAL ENVIRONMENTAL VARIABLES AS GEOLOGY, CLIMATE, VEGETATION AND BASE LEVEL, TO SAY NOTHING OF HUMAN INTERFERENCE. • THE PHYSICAL AND CHEMICAL INTERACTIONS BETWEEN THE EARTH'S SURFACE AND THE NATURAL FORCES ACTING UPON IT TO PRODUCE LANDFORMS. • THE PROCESS RESPONSIBLE FOR THE FORMATION AND ALTERATION OF THE EARTH'S SURFACE.
  • 7.
    GEOMORPHIC PROCESSES • THEGEOMORPHIC PROCESSES INCLUDE; • EROSION • TRANSPORTATION • DEPOSITION
  • 8.
    EROSION • OCCURS WHENRIVERS ERODE OR WEAR AWAY THE LAND SURFACE OVER WHICH THEY ARE FLOWING • THE ROCK PARTICLES WHICH ARE WORN AWAY FROM THE LAND SURFACE ARE CALLED SEDIMENTS
  • 9.
    TRANSPORTATION • IS APROCESS WHERE THE SEDIMENT PRODUCED BY EROSION IS CARRIED AWAY DOWNSTREAM BY THE RIVER.
  • 10.
    DEPOSITION • HAPPENS WHENTHE SEDIMENT MAY SETTLE EITHER ON THE RIVER BED. • WHERE THE WATER FLOWS MORE SLOWLY AS IN THE FLOOD PLAIN, OR EVENTUALLY ON THE SEA BED.
  • 11.
    REFERENCES • NAZIR HOSSAIN,M.D. (2016) INTRODUCTION TO GEOMORPHOLOGY. AVAILABLE ON SLIDESHARE HTTPS://WWW.SLIDESHARE.NET/MDNAZIRHOSSAIN1/INTRODUCTION-TO-GEOMORPHOLOGY (ACCESSED 13 SEPTEMBER 2017) • G-MEDHIN, N. (2012) GEOMORPHOLOGY AND LAND SYSTEM. AVAILABLE ON SLIDESHARE HTTPS://WWW.SLIDESHARE.NET/NIGATUGMEDHIN/GEOMOROPHOLOGY-PRESENTATION (ACCESSED 13 SEPTEMBER 2017) • IRABBETTES, I. (2007) GEOMORPHIC PROCESSES. AVAILABLE ON SLIDESHARE HTTPS://WWW.SLIDESHARE.NET/LRABBETTS/GEOMORPHIC-PROCESSES (ACCESSED 13 SEPTEMBER 2017)